Regrets

I think that the thing I regret most is that I didn't learn sooner how not to dwell on regrets but, instead, to take the things regretted and learn from them. Making mistakes is part of life but unless we make friends with our mistakes, learn from them and regard them as the starting blocks that make running the race more effective, they become stumbling blocks that hinder us because we are constantly dwelling on them.

My biggest regret is my ex. I wasted way too much time, energy, and tears, and lost too much sleep over him. He wasn't worth any of it.

not going to university when I was much younger, I went to late in life, I would have have a good career had I gone earlier.

That's a tossup. Both have to do with relationships and not communicating better.