This is true enough, but success is the next best thing to happiness, and if you can't be happy as a success, it's very unlikely that you would find a deeper, truer happiness in failure.
I never met Peter O'Toole, but he one was of those rare actors whose success was defined by a single role. His incandescent performance in David Lean's 'Lawrence of Arabia' is one that nobody who saw it will ever forget.
If you don't believe in yourself, then who will believe in you? The next man's way of getting there might not necessarily work for me, so I have to create my own ways of getting there.
It strikes me that people want to be engaged, and that those who go into a bookstore in a time of crisis are much more likely to be looking for explanation than for escapism.
It's not a field, I think, for people who need to have success every day: if you can't live with a nightly sort of disaster, you should get out. I wouldn't describe myself as lacking in confidence, but I would just say that the ghosts you chase you never catch.
The novelist wants to know how things will turn out; the historian already knows how things turned out, but wants to know why they turned out the way they did.
Your chances of success are directly proportional to the degree of pleasure you desire from what you do. If you are in a job you hate, face the fact squarely and get out.