I was recently asked by a parent for my one and only one best nugget of advice I would offer to a college student who is struggling a bit. Limiting any answer to such a broad, open-ended question is brilliant, because it makes you pause and think carefully before answering — I suspect I will write an article on this “limits make answers better” concept in the future — but for now, I’ll turn to the challenge at hand.
My best advice is to evaluate and then choose your best friends carefully. College (and high school for that matter) gives you a lot of opportunity to select which friends you would prefer to get close to. Unfortunately, many students fall into a group without forethought, just as many adults fall into a job.

If you fall into a group that is more concerned about the next party than the next homework assignment or upcoming exam, the gravity of the friendship will inexorably influence you to party more and achieve less. If you surround yourself with lazy pessimists that only hope to graduate in 6 or 7 years, don’t be surprised if you join the same track of dropping classes more often than finishing them. If your friends have no vision of their future, ponder why they are there, and still believe that their parents will somehow magically arrange their future, you will too. On the other hand, if you carefully choose and cultivate friendships with individuals with passion, drive, leadership, charisma, and other characteristics that you yourself aspire to, you will find vision, momentum, and encouragement when you need it most.
It is never too late to reassess. Are your close friends helping you succeed or dragging you down? Are they true friends or are they only friends of convenience? Is their heart in the right place? What do they say about you when you are not there? If they are dragging you down, make a bold decision, change your friends for the better, and you will find that you will change your trajectory. Looking back, I was fortunate with the close friends I made at school, starting with a good first “suite” of achievers in the freshman dorm (that was a lucky break, not one of my own choosing). Like everything else, it is not a matter of wishing things were different. Change only happens when you make clear decisions and then do it, finishing what you started.
I.M. OptimismMan
PS. A couple of quotes, because I love quotes.
Consider each of your friends in this context. I would add help you “be all you can be” but this quote goes a long way in capturing the essence:

It isn’t all that hard to test your friendship:

You can’t really know until times get tough. Everyone is your “friend” when things are going well:
