If you could go back in time, what would you change?

If you could go back in time and change one thing in your life, what would it be, and why?

If it’s embarrassing, just tell me a very very general answer. Be as vague (or as specific) as you like. Just leave your answer in the comments, or email me at jimcullenaus@gmail.com. Feel free to be anonymous.

I have a hypothesis, but I can’t reveal it for fear of contaminating the results.