Poor mentors get to the end of a quarter and see the gap – the difference between where they expected their mentee to land and where they actually are – and do one of two things; they reset with a new plan, or they call it failure.
Both responses skip the most important work in mentoring.
The gap is a diagnostic. It tells you something about your mentee, something about the quarter, and something about yourself as a mentor. Understanding it is the skill. Skipping it is the reason so many mentors stay stuck in the same patterns, with the same blind spots, cycle after cycle.
What the gap actually is
In any mentoring relationship, you set intentions for the mentee's development. Over a quarter or a year, you work together. If you're paying attention, you're noticing things along the way: moments where they surprised you, constraints you didn't anticipate, learning happening somewhere other than where you expected.
Then the formal moment arrives – a review, a reflection conversation, a planning discussion – and you look back and make sense of what you've been seeing.
You expected them to build leadership presence; they deepened their technical expertise instead.
You thought they'd take on a stretch project; the business shifted midway; that project got deprioritised.
You believed they were ready to delegate more; they spent the quarter doing more hands-on work.
You aimed for more confidence in ambiguous situations; they became more cautious – perhaps more honest about what they don't yet know.
None of these are automatically failures, but how you respond will determine whether you actually help this person develop, or not.
Why the gap exists
Circumstances changed. The quarter you planned for and the quarter that actually happened were different. Budget cuts, a key hire or departure, a product pivot, a client win or loss – the context moved. A development path that made sense in January didn't in April. Your mentee was responding to real constraints, not ignoring your guidance.
Learning happened on a different axis. Development doesn't follow the syllabus you write for it. Your mentee didn't grow in the way you expected – they grew in the way the situation demanded. A crisis project, a difficult stakeholder, a period of genuine uncertainty. Learning happened, but not where you expected.
Readiness wasn't where you thought. You assessed them as ready for a stretch. They weren't - not because they lack capability, but because something else wasn't in place. Or the inverse: they were ready for more than you thought, and they moved faster. Either way, your initial read was a hypothesis, not a fact. You now have the data.
Competing priorities. You aimed for one thing. Their day job demanded another. They triaged – under real constraint, with limited time and energy. That's not failure. That's a person managing actual work.
The goal became less relevant. The business changed. The role changed. The mentee's own clarity about what they want shifted. Measuring against a goal that no longer applies is pointless.
Understanding which of these explains the gap helps you to get an accurate picture of what happened, so you can respond to the reality, rather than the plan.
The three default moves that miss the point
When mentors see the gap, three responses are common. All three miss the mark.
Resetting without reflection. "That didn't work. Let's plan better for next quarter."
This avoids discomfort, but it doesn't use what the gap is telling you. You carry the same blind spots into the next cycle. You start over without understanding what the previous quarter actually revealed.
Judging without context. "They didn't hit the goal. That's on them."
This treats the goal as fixed and the mentee as having failed to meet it. It doesn't ask what changed, what constraints they were managing, or what they were actually navigating. It's feedback measured against the plan, not against reality.
The mentee internalises feedback as failure even when it wasn't. Or they disengage because the feedback doesn't match what they lived. Either way, you've lost them. Not just for the quarter, but for the whole relationship.
Lowering expectations prematurely. "They clearly weren't ready for this. Let's dial it back."
Sometimes this is the right call; the mentee genuinely wasn't ready, and scaling back is honest and useful. But often it's premature – a conclusion drawn from one quarter, used to lower the ceiling permanently. You're using the gap as evidence to reduce expectations, when you should be using it as evidence to understand what happened.
Sitting in the gap: what good mentoring looks like
The work is to understand the gap. And that starts with asking the right questions.
About circumstances: What changed in the quarter that wasn't visible when you set intentions? How did those changes affect what was possible? Where did the mentee make trade-offs, and what drove those decisions?
About actual learning: What did they develop this quarter, regardless of whether it matched the plan? What surprised them about how they showed up? Where did they find capability they didn't know they had?
About your assumptions: Where did your read of their readiness turn out to be wrong? What did you misunderstand about what they needed to take the next step? What became clear – to both of you – about what progress actually requires?
About the goal: Is this still the right development edge? Or has enough changed that continuing to measure against it is just noise?
These questions change the shape of the conversation. You're no longer running a measurement exercise. You're trying to understand what actually happened to this specific person in this specific quarter.
Then you do something with what you learn.
You listen for the real story. You hold space for the mentee to explain what happened without needing to defend themselves. Curiosity, not judgment – or at least the attempt at it.
You recognise that not all gaps are equal. A gap from circumstances shifting is different from a gap from genuine unreadiness, which is different from a gap where learning happened on a different axis. The mentoring response is different in each case. If the context shifted and the mentee adapted well, that's data about their judgment and resilience. It deserves recognition, not measurement against an intention that stopped being relevant halfway through the quarter.
You calibrate feedback to what happened. Feedback grounded in the actual context of the quarter is feedback a mentee can use. It feels fair because it is fair. It builds trust. Feedback measured against a static plan – especially one that circumstances made irrelevant – is just friction.
And you adjust your approach going forward. The gap teaches you something about how to mentor this person. Maybe they need more clarity upfront about how progress will be tracked. Maybe they need more flexibility to shift when things change around them. Maybe they need to build more ownership over their own development arc. You can't know that from a plan. You learn it from sitting with what happened.
What the mentor gains
A mentor who skips the gap work maintains a fixed view of their mentee. They only see what didn't happen. They plan the next thing. They measure again. They never get to know the person.
A mentor who sits in the gap learns something useful:
- They learn how their mentee thinks under constraint. Not in ideal conditions – under pressure, with imperfect information, when the original plan no longer applies. That's the basis for mentoring that actually develops someone.
- They recalibrate their own assumptions. Where was the readiness read wrong? Where was capability underestimated? Where was the mentee managing something the mentor didn't see? Getting sharper about this makes you more accurate over time – and more honest in your guidance.
- They give feedback that lands. Grounded in context, it feels fair. The mentee can act on it. That's the difference between feedback that builds a relationship and feedback that erodes one.
- They learn what actually works for this person. Some mentees need structure. Some need flexibility. Some need explicit success criteria. Some need room to fail without it being held against them. None of this is visible from a plan. It shows up in the gap.
The plan was never the point
Mentoring isn't about executing a development plan; it's about understanding the person in front of you well enough to help them grow.
The gap between the plan and reality is where that understanding lives. Understanding it requires holding complexity and uncertainty instead of measuring against something clean. But that is where the skill actually is.
The plan is a tool. The gap is the material. The mentor who learns to work with both becomes the kind of mentor people actually develop under.
What happened is more useful than what was planned. Learn to read it.
Ady Coles works as a thinking partner and mentor to leaders and teams navigating complexity. His work centres on judgement, perspective, and the often-invisible work of translation - helping people understand their role in the system, make better decisions, and operate with confidence in uncertain environments.