My advice for all new hires: I have two types, and two positions as a 121 captain. I have one checkride failure from pre-Private through to today, and no oral failures. It is great to work with others and to drill procedures and checklists with others. But, to me, you do need to be able to train and prep on your own. Those who are unprepared, or those who just aren't trying like they should, can bring you down if you hang out with them too much. My sim partner for my jet type was a walking trainwreck. I got to the point where I told him that he was voice activated. He should not do anything unless I command it. I know that people can be unhappy to be "sandbagged" for the checkride when they get someone else other than their sim partner flying with them. But, I was kissing the ground on that one. To prep for tests, I would drill myself on questions for the oral, and chair fly consistently for the checkride. Establish a sustainable rhythm for yourself that keeps you sharp, but doesn't let you get slack, but also doesn't burn you out. Lock into that and keep it up until you are signed off to be a line pilot. Also remember, it isn't over until IOE is done, and your paperwork is all in. While wrapping up my jet IOE, I had a Fed Ride one direction, and the other candidate on that flight flew back. He didn't make it on his Fed Ride back, and didn't make it later on his second attempt. He went back to FO. It isn't over until it's over. Stay sharp and stay ready throughout the entire process.