If you're in the US, the military has a placement test that can show you your strengths and weaknesses. You don't have to sign up to join to take the test. There's even a civilian version of it but I can't remember what it's called. Here's the description of the army test: "The ASVAB is a standardized test that reveals areas of strength and ability in science, math, and language. Taking the test is one of the first steps before you enlist. Once it’s over, you’ll get to find a job that matches up to your strengths."