Hard work, an appetite for risk and resilience are required for success. But they are in no way a guarantee.
Instead of taking an all or nothing mindset, you can choose to invest in yourself over the long term. Financial investments, education. Maybe this won't be enough to achieve your goals, and you'll still live with regret. And maybe you'll die before you reap the benefits. Or maybe this will be enough for you.
Who knows. The only certainty is death. Doing something is better than nothing.