What helped me was realizing that some attendings can be antagonizing and that they will never, ever give you the benefit of the doubt. Trying to please some of the more toxic personalities in the profession is futile if not dangerous. Just do your job and change what they want you to change. Never let them get the best of you and never let them see that you are nervous or upset. That's blood in the water. Some bullies get their kicks from tearing into terrified med students.
I think when you have very little clinical experience, it's difficult to determine what is important and what is not. Our presentations can seem a little redundant even when they are otherwise flowing and logical. We're taught over and over again in years one and two to leave behind no salient details of the case, but many an attending on rounds wants to hear just the most important information. "Should I say this is an 86 y/o M w h/o CAD presenting with abd pain, or should I wait until PMH to mention CAD along with everything else he has???" Can be tough for a new student to sort these sort of questions out. Some attendings don't believe in a differential diagnosis. Some don't want to ever hear about anything besides HPI, PMH, Meds and Allergies. Some just want you to spout the diagnosis without providing any background information, and then proceed directly to overnight events and plan. Others actually expect you to report every positive and negative finding on the review of systems and will all but hit you for leaving out parts of social and family history. Some are really into teaching but expect everyone to present exactly the same way they present and obsess over style. Some have zero interest in being your teacher and are in a hurry to get back to their office, leave work, etc. You can't do anything in their mind but waste their time.
Their reactions vary: some teachers understand that you're a beginner and allow you to present the way you were taught. Some allow for mistakes. Some of them guide you with constructive criticism. Others interrupt you every other second, roll their eyes, and slam the hell out of you in front of the group and on evaluations, even if it was your first rotation.
My solution was to stop caring about negative attitudes and gestures on rounds and focus on myself. Do what I was taught. Correct my mistakes. Maintain eye contact with the boss. Speak loud and don't drag on. Answer questions in a word or two, or say "Don't know." If they try to bully you, stand your ground but keep answers short and keep eye contact. They won't enjoy it as much and subsequently stop picking on people. Sometimes, the residents appreciate this, especially if they're also targets. These modifications to my own behavior earned me my favorite comment on all of my evals... "not afraid of attending," in reference to a particularly intimidating person we all had to work with.
Had some attendings tell me I don't know how to present a history (this was early on and they were probably right). Had several other attendings, residents, etc tell me I present well enough. Had a chief stop rounds and have everyone listen to my presentation cuz that was "exactly what I'm expecting." Everyone's different.
3rd year = getting along with people. Can't please em all.