Every inside sales leader eventually runs into the same moment.
A rep isn’t doing what they’re supposed to do.
The calls aren’t happening.
The pipeline is thin.
The activity looks busy… but nothing is moving forward.
And the question hits you:
“What’s going on with them?”
Most leaders guess.
They assume the rep is lazy.
Or disengaged.
Or just “not cut out for sales.”
But guessing is expensive.
Because before you try to fix a performance problem, you have to diagnose it.
That’s where one of the simplest leadership tools I know comes in:
Can’t. Won’t. Don’t Know How.
Three possibilities.
Only one will be true.
And if you treat the wrong one, you’ll waste weeks (or months) trying to solve the wrong problem.
Let’s break it down.
1. The Rep Who Can’t
This is the one most leaders miss.
A Can’t means the rep is genuinely unable to perform the task.
That might be because of:
- Broken internal processes
- Missing tools or system access
- Poor territory alignment
- Or a genuine role mismatch
Example:
Your rep can’t get proposals out quickly.
Your first thought might be:
“They’re disorganized.”
But when you look deeper?
Engineering takes two weeks to respond.
That’s not a performance problem.
That’s a business problem.
And leaders who diagnose it correctly don’t coach harder…
They remove the blocker.
2. The Rep Who Won’t
This is the one that frustrates leaders the most.
The rep can do the job.
They’ve done it before.
They know what good looks like.
But they’re not doing it.
Now you’re not dealing with a skill problem.
You’re dealing with something underneath the behavior.
Maybe:
- Fear of rejection
- Burnout
- Loss of confidence
- Lack of belief in the process
This is where real leadership happens.
Because you can’t fix a Won’t with training.
You fix it with conversation.
3. The Rep Who Doesn’t Know How
This is the easiest one to solve.
The rep is trying.
But the skill just isn’t there yet.
Maybe they don’t know how to:
- Run discovery
- Handle objections
- Ask for the next step
- Navigate decision makers
This is where coaching works beautifully.
Because effort + training = growth.
And when leaders diagnose this correctly, reps improve fast.
The Leadership Mistake Most Managers Make
Here’s where things go sideways.
A rep doesn’t perform.
And the leader jumps straight to training.
But what if the problem isn’t skill?
What if it’s a Won’t?
Or a Can’t?
Now you’re solving the wrong problem.
Which is why the best inside sales leaders pause and ask:
- Is this a Can’t?
- Is this a Won’t?
- Or do they not know how?
Because once you know the answer…
Your next move becomes obvious.
Leadership Challenge
Think about one rep on your team who’s struggling right now.
Ask yourself:
Which one is it?
Can’t.
Won’t.
Or Don’t Know How.
Your answer determines everything that happens next.
And in the next post, we’ll go deeper into the one leaders struggle with the most:
The rep who won’t.