That's a either a very poor, or a very apt, metaphor. A resonant frequency is also the one that will destroy things, from a wine glass to a building. Tesla famously claimed he could build an earthquake machine based on resonance frequencies. If you find your resonant frequency, you may burn yourself out.
Allow me to make an interpretation. For the last many years you've had a goal, which is to graduate, first from high school, and then college .. and given your age, perhaps also graduate work.
Graduating is an easily expressed, realizable goal. There's an entire infrastructure set up to help you reach that goal.
And now, you're done. You're the Apollo astronaut who's walked on the Moon, come back to Earth, but the parades are done, and now what? See http://www.telegraph.co.uk/news/science/space/5870958/Apollo... :
> "What can make it hard for people like this is that they're so highly motivated and they wait so long for a mission," Prof. Palinkas told Time. "There can be a deep sense of loss once the goals have been accomplished, and there may be no adequate substitute."
If that's so, then my first and second substitutes were startup jobs, both of which lead me towards burnout. I then got involved with social dancing, where I had a big, though local impact. I'm now researching the early development of chemical information systems, from punched cards to 1990, because it interests me, even though there are only a few dozen people in the world who would care.
If you have meaningful impact on 10 people, will that be enough? Or do you need to affect the world? Does it require being better than other people at something? Once you've achieved that, then what? If you become the next Marie Curie and get two Nobel Prizes, each in different fields, will you feel like you need to go for a third?
At some point you have to decide that what you're doing is good enough. You need to learn where that is.
BTW, you contrast "comfortable life" with "meaningful impact". These are not necessarily opposites and you shouldn't think of it that way.