Life is as good as you make it!
I have seen many walks of life that those who do take into consideration of what others think but don't care or act on it, they seem to live happier and take more chances in life.
Errors do pile up and accomplishments do disappear however you only need to prove to yourself and keep in mind of your success's, better yourself and others will see your confidence and believe in you.
I could be wrong but I'm going to give it a try...