Do Overs

I have always been someone who doesn't believe in regrets. What's the point, right? You can't go back in time; you can't change the decisions you made. Everything that could be interpreted as a regret, should be seen as a lesson learned instead. I am a firm believer that everything happens for a reason and our paths takes us where we are destoned to go. So why then, are there some decisions that seem to haunt us many, many years later? Is it that we didn't learn a lesson from the situation? Or is it because the lesson we learned was one about ourselves that was not very flattering?
There is one terrible decision that stands out in my mind as a regret. Now that i am writing all of this down, I can see why. The lesson that I learned from that decision is that at that time, there was a side of me that never considered how my actions made other people feel. I was a teenager trying to play an adult game that I thought I knew all about. Looking back at that decision and the people involved in it, I can see how it was the right decision just carried out in the wrong way. I suppose that my problem with this regret has been turning it into something positive. I couldn't do that until now. I couldn't do that until I wrote this and realized that the side of me that reared it's ugly head then, is not a part of me anymore. I am a better person now because of bad decisions that I have spent years regretting.
So maybe in life we don't get do-overs, we remodels instead.