It is safe to say that you are humiliated by mistakes you have made from before? It is safe to say that you are worn out on living with the results of those mistakes?
no and no... but I guess it's just me?
You may regret yourself since you are worried and may feel as you don't add to society however much you ought to. That is OK.
This is great! It's OK to be ourselves, for ourselves. We don't HAVE to add anything to society.