Without a doubt, your hard work in test prep led to better SAT scores, which got you into college. It's not clear, though, that SAT prep skills are going to help you ever again.
I know that all those years of practicing (8 hours a day!) got you plenty of praise and allowed you to reach a high level on the bassoon. It's not clear, though, that practicing even more is going to be the thing that takes your career where you want it to go.
Of course you needed a very special set of skills to raise all that money for your company. But now, you've raised it. Those same skills aren't what you need to actually build your company into something that matters, though.
Successful people develop a winning strategy. It's the work and focus and tactics that they get rewarded for, the stuff they do that others often don't, and it works. Until it doesn't.
When times get confusing, it's easy to revert to the habits that got you here. More often than not, that's precisely the wrong approach. The very thing that got you here is the thing that everyone who's here is doing, and if that's what it took to get to the next level, no one would be stuck.