If you could have a chance to redo your life, what would you do?

There is a saying, "Regret always comes late."
Everyone has regret. Thus, many people always ask, "Why all of this happens? Why did I do this? Oh, if only I could have a second chance." These questions always come to us frequently.
Well, although this question doesn't make sense as we can't redo our life, I am just curious about your answers.