You cannot return to the past and change what happened, but you can decide what happens next.
A new direction may begin with a small choice:
Applying for an opportunity even when you feel unqualified
Returning to education or learning a new skill
Leaving an unhealthy environment
Asking for help
Forgiving yourself for an old mistake
Starting again after failure
You do not need to transform your entire life today. You only need to take one honest step toward the future you want.