I agree with what Titch said, but some mistakes I made had no positive impact. I learned nothing and everything was worse. So I'd have talked to Natasha about staying in touch earlier, rather than leaving it until my last day of junior school, as I knew I would be away on the last day, but she was off sick on the day before, so I just never saw her again. It's silly, but it's always bothered me!
I'd never have gone on that stupid celibacy kick in my 30s! I could have met someone really special and one woman I knew would have been really good, but I chose to be my own man with no need of anyone else... and then got ill and then it was a catalogue of disasters ending in 2020, so I most likely blew my chances of having a kid and that I regret a lot.