Success is made of work and luck, but to successful people it looks like just work, because luck is, by definition, accidental. Yes, if you try more things you'll increase your chances that one of them will succeed, but increasing the odds is still luck. Your work doesn't make more luck, it just exposes more of your work to luck. It's like buying more tickets in a raffle. You'll have a better chance of winning, but it also costs more and still has a luck element to it.
Instead of trying to emulate success stories where luck played a role, we need to look at failure stories and learn from other people's mistakes. The point is this: recognise the odds, and work with them. The ones who take the long shot might win big, but most who follow them will fail. Most of us are better off only taking risks on our passions and cultivating some patience when it comes to our lives.
Mokalus of Borg
PS - In other words, aim to get rich slowly.
PPS - But take advantage of real opportunities, too.