>>910650I agree with
>>911686It's not too late, it's never too late.
Sure, you might have been a shithead, and you might have too far damaged your rep with certain people, but you can work to change that.
Don't let your boss speak for you, just talk anyways.
If you have wronged people, try to fix the wrong. Don't do it because you want to be their buddy, do it because you fucked up, and it's the right thing to do to take responsibility. That will start to fix your rep, and word will get around, especially if you were a super asshole. People will be thrown off by it, and will tell other people because it's interesting.
Animal science sounds like a good field. There is a fuckload of money in animals and their care.
Sure, your former friends might being doing "big" shit, but who cares. Why do you need to be like them?
If it makes you feel better, my "friends" are all graduating college, while I flunked out because I'm an ADD riddled fuckhead.
What do you really want to do?