You can blame them as long as you like. But it isn't doing you any good. It is only hurting you, and maybe them as well. It doesn't accomplish anything and you will never learn from your mistakes. Unless they directed every move you have ever made, it isn't them.
Knew a woman whose kid wanted to blame his misdeeds on his rotten childhood and his mom. Now, granted, this kid had a rough time of it. But.............
The mom asked him? Do you know the difference between right and wrong?
The son answered Yes.
Mom replied, Then I did my job!
This may be oversimplified but basically it's the truth.