First thing- Don't be an actuary. It's a fleeting profession. If you do choose to be one, don't take the tests until after you graduate college, that way you can actually enjoy school. I have two friends: friend A chose to do a bunch of his exams through college and made a ton of money right out of college. Friend B had way more fun in college and started his exams after school and now are both pretty much caught up 5-7+ years out of school. Friend A regrets it.
Another opinion: You cannot be afraid of who you are and meeting new people. I am one of the foolish people who got arrested the first night of college by having a huge party. Yes i regret that aspect, but i was put on the map from day 1. i had a glorious 4 year career (donna how i made it out in 4) but the moral of the story is you can't glue yourself to your room, your dorm, etc. You need to get out there and be as outgoing as possible. It always sounds cliche when people say this is the best 4 years of your life, but it really is. I had a very very tight knit crew in high school, and now as i prepared to get married, only 1 of those people is going to be in my wedding party.. the others- my college friends (and my brother). Just live it up man. Be care free, make mistakes, but make sure you take care of academics. My freshman year i got a 2.2 and only 9 credits and got suspended from the soccer team for a semester. Not the way to succeed academically, or please your parents.