If you could show a younger you the results of a decision you regret now, do you think you would do things differently?

To clarify, younger you has the knowledge of what will happen, but still has the same motivations, maturity, etc. What if you could completely control the younger you? Would current you change things?

This is partially inspired by the song Same Mistake by James Blunt, specifically the line “Give me reason but don’t give me choice, because I’ll just make the same mistake again.”