I don't believe I would change anything or for that matter even take the trip.
I've worked hard to be satisfied with who I am today.
I have made mistakes, but none I haven't learned from or regret.
And on the occasion which is rare to get it right the first time I would risk perhaps not getting right the 2nd. Be it luck or diligence in research and paying attention, getting things done right the first time is almost a miracle.
I'll pass on the trip.
Thanks for asking the question.