I'm sorry if this is the wrong place for this, but I'm kind of trying to find a turning point in my life.
I've been told repeatedly that I have a talent for math, or science (by qualified people). And I seem to be intelligent enough to understand large parts of math and physics. But I don't know if I'm intelligent enough to make a meaningful contribution to math or physics.
Lately I've been particularly sad, since my score on the quantitative general GRE, and potentially, the Math subject test aren't "outstanding". They are certainly okay (official 78 percentile, unofficial 68 percentile respectively). But that is "barely qualified" for a top 50 math program.
Given that I think these scores are likely correlated with my IQ (they seem to roughly predict my GPA so far 3.5, math and physics major), I worry that I'm getting clues that maybe I should "give up".
This would be painful for me to accept if true, I care very deeply about inference and nature. It would be nice if I could have a job in this, but the standard career path seems to be telling me "maybe?"
When do you throw in the towel? How do you measure your own intelligence? I've already "given up" once before and tried programming, but the average actual problem was too easy relative to the intellectual work (memorizing technical fluuf). And other engineering disciplines seem similar. Is there a compromise somewhere, or do I just need to grow up?
classes:
For what it's worth, the classes I've taken include Real and Complex Analysis, Algebra, Differential geometry, Quantum Mechanics, Mechanics, and others. And most of my GPA is burned by Algebra and 3rd term Quantum specifically. But part of my worry, is that somebody who is going to do well, would never get burned by courses like this. But I'm not really sure. It seems like one should fail sometimes, but rarely standard assessments.
Edit:
Thank you all for your thoughts, you are a very warm community. I'll give more specific thoughts tomorrow. For what it's worth, I'll be 24 next month.
Double Edit:
Thank you all for your thoughts and suggestions. I think I will tentatively work towards an applied Mathematics PHD. It isn't so important that the school you get into is in the top ten, and there will be lots of opportunities to work on a variety of interesting important problems (throughout my life). Plus, after the PHD, transitioning into industry can be reasonably easy. It seems to make a fair bit of sense given my interests, background, and ability.
If you're doing it to make a "meaningful contribution", not for fun, it can be hard to stay motivated without outside assurances that you're doing "well".
It's hard not to identify as a child prodigy anymore. If you want to do something, there are things to do to increase your odds of success. For example, if you want to do really well on the Math GRE, do practice problems until you know all the concepts and get the score you want on practice tests. Unfortunately, this takes a lot of focus over a long time. If you want to make a meaningful contribution, look at Mark Andreessen's advice: get pretty good at two separate areas/fields, then do something that uses both of them. The other option, being the best at one specific area, requires competing with people who enjoy studying so much it damages their health. Good luck.
This type of question is difficult to answer here because my answer necessarily relies mostly on relatively non-academic sources, largely personal experience, and it's hard to discuss this topic for the same reasons it's hard to discuss politics.