"A successful man is one who can lay a firm foundation with the bricks others have thrown at him."

I guess pretty much that this quote indeed does spell alot in life that we have to know and learn to be successful. We should always welcome criticisms and improve from there, instead of shunning from it and trying to persuade others that you're good (unless you genuinely know that he's doing that on purpose, then you can try to find out why he is doing it and try to handle the situation well enough that he will no longer want to do such a thing =D )