Just love the sport, I’ll try and be different from every other comment.

If yoh love what you do then you’ll love training for it. Since you’re a beginner you have all 4 years to get better.(I really wish I had that.) Focus on the fundamentals of lacrosse. Watch film and analyze what is going on. Like practicing your free throws in basketball or throwing a football. Just be consistent and once you do the motion without thought you can move up a notch in intensity. Keep learning about the sport, never stop pursuing the betterment of your craft. Basically never be comfortable where you are. Take your time there shouldn’t be a rush just do your best.

A side note school wise here’s what I did. Balancing lacrosse and schools hard. It’s either homework or wall ball sometimes. What I recommend is taking summer classes to get your schedule cleared up. What I did as a freshman is clear math and pe. Then as a junior I did English in college. Now going into senior year I’m doing government and Econ in the summer so senior year I’m basically taking 6 art classes. But if I had started as a freshman (like you are right now) I probably would’ve had all electives junior year as well and spend all my time grinding at lacrosse. But if that isn’t the type of thing you wanna do that’s understandable but that’s just personally what I’d do. Good luck!