Read this:
https://www.mrmoneymustache.com/2016/01/13/an-interview-with-the-lawyer-who-retired-at-33/Investment banking is brutal, but if you can hack it for a while and sock away your money you can indeed retire very early. Just be very very careful about lifestyle creep because people will push you to blow money like it is going to catch fire in your wallet.
In your first couple of years you will not learn much about investing because you will be in the soul suck of modelling and due diligence. You'll learn about investing later, but it will be useless for your civilian life since the amounts of money and complexity are staggering. This is the other thing to look out for: if you get into IB it means you are smart, but remember you are not THAT smart and stick to the good old boring index funds.
Learn hard math - you won't need it but it helps to be able to think fast when it comes to numerical stuff. You will need to be a mix of disciplined, ruthless and personable (being a high functioning sociopath helps you hit that sweet spot, but it is not necessary and it tends to be frowned upon).
You'll need to go hard for IB but remember that financial services has a million flavors. Private Equity, Venture Capital, Wealth Management, various kinds of trading - all of these people make a lot of money. That is not even to mention the operational and back office stuff - less glamorous but also a bit less intense and still paid above the average for similar positions in their same specialties.
And have some fun too. Make lots of friends in college, and a few really good ones - those are the people you may end up crossing paths with in your professional life and may also be the ones you can always count on in your personal one. The slightly odd international student with the incomprehensible accent may turn out to be a really cool person - make friends with them; they are probably even more confused about the experience than you.
Most times, it is ok to drink but the quicker you learn not to drink yourself stupid, the better. You will look back one day and wonder how you drank that swill in college anyway.
Travel if you can. Hell, even take a year off and go be a bum somewhere strange and wonderful. It may seem that you have to race to your goal now and thread the straight and narrow to get a good job, but that is absolutely not true. Firms like people who have interesting life experiences - as long as you don't derail and let your grades go to down the toilet (keep'em high), you will be fine. You do need to get into banking while you are bright-eyed and bush-tailed to put up with the grind, but a year or two living abroad and learning a language won't kill you (it is better to do it before your Jr or Sr year because that is when they recruit).
And if you don't make it into banking, don't sweat it. There are a ton of good gigs out there. Some will require you to work longer to FI, but you may actually lose the rush if you like what you are doing . If you struggle to get into the industry or are miserable in it those are probably indications that you are better suited for something else - probably lots of something elses.
Read widely. It will make you more interesting and your mind quicker. You may need to grasp how a laser manufacturer works one month and then come up to speed on the concrete industry in the next. If your mind is able to grasp things fast beyond the numbers you will do well. Besides, Plato is pretty cool, the Illiad has enough blood and gore to make Tarantino blush, and there are some great dirty jokes in Shakespeare. Take a weird class or a few just because they have an interesting title. "The Sociology of Game of Thrones" probably has some bullshit in it, but it is likely to be hella interesting. Do the cool kids even say 'hella' anymore? I feel our of the loop since "yeet" emerged and I have no idea what it means.
If you start dating someone that makes you feel bad about yourself, DTMFA. Life is too short for shitty people. Don't be shitty yourself. When in doubt, always choose kindness over any other option.
Put the toilet seat down, or don't complain when it is up (depending on your persuasion). Little things matter sometimes, and sometimes they don't. Either way, don't be that guy or girl.
Live well. More than a job training ground, school should be a place where you try to figure out what that means to you.
