Failure is natural. Never lose hope. Believe in yourself.
Success can only grow from failure, courage, and perseverance. Composing your attitude towards failure is the key to success. Self-pity accomplishes nothing. Instead, see the flaws, pick yourself up and try again. Society doesn't reward defeat and failure offers time for reflection. Don't just dream; make it happen.
I don't believe that sky is the limit, because there are galaxies, the "Milky Way" and the universe. The only limit is yourself.