1. Name one thing you didn't try.
A job, a person, a move, a sentence. Specific and real, not a general category of missed opportunity.
2. What reason did you give at the time?
Write the exact explanation you used, to yourself or to someone else. Then decide whether you still believe it.
3. What would failing at it have proved about you?
This is usually the real content. Not the loss itself, but what the loss would confirm.
4. What is the current version of that same decision?
There is one in front of you now with a different label on it. Find it.