If you don't know me personally, it is important for you to know that I am twenty one years old and that I had been out of high school for two years before starting my first semester of college. With this being said, I will now give you my three lessons I learned on my first semester of college:
1) You are your best competition
You will be surrounded by many people like you, but yet none of them are your competition. Your are your best competition. Anything that you do you have to do to surpass your own self not anybody else. Everyone is on their own road, let them be. You stay on yours and get your goals checked off.
2) Not everybody is going to like you
Especially when it comes to age differences. We are all focused on different objectives and interests with unique perspectives and that is okay. When you first arrive on campus you will see all of these people walking and doing the same things as you, but not all of these people are like you. Not being alike is fine because you will eventually find people like you, and let me tell you, it will be wonderful!
3) Home is the best finish line
There is no better motivation to get assignments and finals done other than going home because you know this means being worry free and you finally get to relax after month's of running behind due dates. To look forward to home is the greatest inspiration you can wrap yourself with. Thinking about seeing your parents and friends as soon as possible really gets you doing the work and also by doing the work lets time go by so much faster and then the day to go home arrives faster than you thought it to be.
After all, your first semester is just that, your first semester. Take it lightly when it comes to personal adjustments. As soon as your inner well being is fine then everything else will be the same. Always stay positive and make sure you look at assignment's due time! ;)