To accuse others for one's own misfortunes is a sign of want of education. To accuse oneself shows that one's education has begun. To accuse neither oneself nor others shows that one's education is complete.
I don't think people change. I think they definitely mature. But I think the essence of what I am today is the same as when I was five years old. It's just maturity. I've become a healthier fuller expression of that essence.