Some negative advice:
1. This isn't boot camp, nor is this Hollywood. There is a line (and it's not that hard to see contrary to the heat of the moment) between educational professionalism and unprofessionalism even for destructive criticism. If some preceptor is going Hollywood Full Metal Jacket on you, you quietly remain professional, then bring it up quietly with the RPD. If that doesn't work, then HR. There is nothing wrong with criticism, but there is a right and wrong way to present it, no exceptions to either party. No one, period, may justify bad behavior on the sake of patient lives. They can discuss destructive criticism in a professional manner in a professional setting, or they need to be counseled on hostile work environment.
2. Consider this a year-long job interview for a job that isn't going to be there. What I mean by this is that you are under scrutiny the entire year. You should perform as if you were trying to impress on a job interview, but don't think or expect that there's a job waiting at the end of the line. Opportunity yes, but not necessarily employment. That said, you get the right people on your side, opportunities get made for you.
3. Try something you think you'll hate as a elective. You should confirm that you hate that activity, while working under a controlled environment to ensuring that if you have to do this hated thing, you'll be competent enough to discharge the responsibility without it possibly coming back to haunt you and while under observation. Oncology, ER, Nutrition, and Pediatrics tend to be that subject for some people. Sometimes, they might find out that it's not so bad after all.
4. Most residencies organize under tribal lines. There's all the normal stereotypes for small-group dynamics. Make sure you're not either the pariah or scapegoat in that group. I wouldn't exactly be the hero either as who doesn't like to see a hero's fall?
5. Rule #2 (behind "Do No Intentional Harm And Try Not To Intentionally Harm") of Practice Training - Always work under the assumption that "you don't know what you don't know." You're going to see things that are out of your comfort zone, don't hesitate to inform your preceptors that you need some time to think or work out the issue or defer if the problem is too acute for you to solve in a timely matter. Make it a point to work on those matters that you discover you don't know during or after hours.