How much is my GPA going to affect me?

I am currently a sophomore at a non-target school majoring in Economics and Computer Science. Last year I had a large culture shock as I am in a school that is far away from home and I am a D1 athlete so the training was intense that first year. Needless to say I got a very less than optimal 3.0 GPA last year. I know I can do a lot better than that and I am much more focused this year (and actually enjoy my classes now) so I am confident I can get a 3.8+ GPA this year and something similar my junior year. I am hoping to get my Masters in Financial Engineering after my fours years and move into the Quant Industry if possible. My question is, Will that 3.0 GPA my Freshman year hold me back from significant opportunities later on when looking for a Masters Program or a Quant role later on?
short answer: nope

long answer: your GPA is the cumulative score of 4 years. Do better on the other three years and you will be fine.

Stop stressing yourself out, you are a sophomore.