You will make mistakes, everyone does. Especially when you are running fast! You will receive criticism for your mistakes. For some people that is scary, or offensive. The way I feel is, if you never make mistakes, you aren't trying hard enough. If you never receive criticism, you can never get better than you are now. People that work here do it because they are passionate about design. Sometimes that means there are "passionate" exchanges or comments made. At the end of the day, everyone here is on the same team and shares the same goal. Don't take it personal. Collect the data, make a correction, move on.
For me personally, there were times that I had to do a lot of business travel (including international) and that caused some stress for me at home being away. I don't think that is typical though.