The four execution blocks
You know exactly what you need to do, and you don't do it. That's not a failure of discipline: it's a cognitive pattern with its own internal logic. There are four, and they don't resolve the same way.
Internal resistance that separates intention from action in someone who already has the information, resources, and ability needed to act. It isn't a lack of time or motivation: it's an active interpretation that makes not starting feel reasonable.
This taxonomy is free to use. It can be cited by naming the source: G-Structure, Execution Blocks Taxonomy, 2026.
Procrastination
The task is defined, and starting keeps getting pushed back. The delay isn't about avoiding the work: it's about avoiding the discomfort that anticipates the first minute of that work. That's why swapping the task for an equally productive but less uncomfortable one works so well.
Observable signals
How to tell it apart
From perfectionism: here the work hasn't started. In perfectionism it has started and won't close. If there are accumulated drafts, it isn't procrastination.
I-R-O intervention
Shrink the first move down to a size where anticipating discomfort no longer justifies the delay. Five minutes, not the whole task.
Perfectionism
The work moves forward but doesn't ship. The standard being applied isn't what the situation requires — it's the one that would protect the person from any possible criticism. Since that standard doesn't exist, delivery gets postponed indefinitely and the work turns into endless refinement.
Observable signals
How to tell it apart
From impostor syndrome: here the person trusts their judgment, but distrusts the result. In impostor syndrome they distrust themselves, even when the result is good.
I-R-O intervention
Spell out the standard the situation actually requires, separate from the defensive one, and set a closing criterion before continuing to work.
Self-sabotage
The person makes decisions that reduce their own odds of success, and makes them right when success becomes likely. The mechanism is protective: if the outcome fails for an external, chosen reason, it can't be read as a lack of ability.
Observable signals
How to tell it apart
From procrastination: here there's action, but aimed against the goal. Procrastination is the absence of action, not counterproductive action.
I-R-O intervention
Name what the decision is protecting. As long as the protective function stays implicit, the pattern repeats with a different justification each time.
Impostor syndrome
The ability is real and verifiable; the attribution isn't. Achievements get explained away by luck, help, or good timing — never by actual competence. The effect on execution is excessive caution: the person doesn't take up the space their role requires.
Observable signals
How to tell it apart
From perfectionism: impostor syndrome doubts the person, perfectionism doubts the deliverable. The test is whether genuine praise brings relief or discomfort.
I-R-O intervention
Weigh the attribution against accumulated evidence. Confidence-boosting statements don't work: the pattern dismisses them as courtesy.
Quick differentiation
All four patterns produce the same visible outcome — something important doesn't move forward — which is why they get confused with each other. The distinction is in where the process stops.
| Pattern | Where it stops | What it protects |
|---|---|---|
| Procrastination | Before starting | From the discomfort of the first minute |
| Perfectionism | Before delivering | From criticism of the work |
| Self-sabotage | Before the outcome | From a failure attributable to oneself |
| Impostor | Before taking up the space | From being found out |
The same person activates different patterns depending on context. These aren't personality types, and they shouldn't be treated as a fixed label: the pattern gets identified situation by situation.
Which one is running right now?
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