My mother was an atheist. She used to say that there was good news and bad news about hell. The good news is, hell is just the product of a morbid human imagination. The bad news is, whatever humans can imagine, they can usually create.
Success is the best revenge for anybody doubting you.
Start where you are, with what you have. Make something of it. Never be satisfied.
On the path of science, failure and success are equally important; they are both steps towards truth.