I'm sure people are getting sick of me using this forum as a guidance session, but I must appeal to the minds of PF once more. Do you need a certain level of predisposition towards physics/math to be good enough to go far in the fields? How do you know if you have it? Are there just some people who cannot handle the rigor of an advanced physics or math education? Please use me as a case study to answer. I am very bright but have a history of being lazy which was reflected in my hs grads and my college grades the first few years. Eventually I started to smarten up. Currently as Major in CS my gpa would be roughly a 3.7, however I am not sure that being good in CS corresponds much to math and physics. At least, what my undegrad school considers CS. My only higher level math course at the time has been Calc I, I got roughly a A-/B+ in the course. This was my first exposure to Calculus and its concepts. IMO if the course graded simply based on understanding of concepts I would have gotten an A. Unfortunately, I tend to my typo/ silly arithmetic errors on exams. Maths lower Calc: Precalc,geometry,algebra and to some sense trig have always come pretty intuitive to me. In so much as I could usually find ways to solve problems without even learning the way prescribed in the book. Furthermore, when less mathematically inclinded students would ask me for help, I usually can not offer it in any real sense they can find useful. I just seem to conceptualize different than they do. On the physics side I do not have much experience but have coming to see that doing well in a physics seems to mostly follow being able to apply the mathematical tools to practical situation, ei modeling a situation. If it plays any roll my IQ was taken to be 136 @ age 10 but now 125-130 @ age 22. I don't know if it does but if you would like to consider it in your answer... So from this starting point how can I tell if I have whatever the necessary intangibles are to go far in Physics/Math? As I investigate changing my major I have began to wonder if there is some intersection of work vs reward where if it might no longer be worth it consider pursuing a physics career. I find my mid-level CS classes somewhat challenging but not too much so and obviously expect that if I did change the major the difficult would increase. However, if I was barely making it by in higher level math and physics course because I simply could not grasp the material, I would rather not go that route. Is there any way to predict such a thing?