Regret will cause more pain than failure ever will.
Failure will give you ways to succeed.
Regret will give you compounding regret. With zero end to that downward spiral.
You will never know how your decision would turn out, until you actually make that decision.
However, if you won’t make that decision, you would always blame yourself and everyone else for the rest of your life!
Do you really want to sign up for that?
I hope not, because it is always a wonderful idea to try and fail than to not try and tell stories (while regretting silently in your mind).