If you ask these project managers, they will refuse to believe but the fact is that most of their time is spent playing a game of office politics. These are often guys who are holding an excess amount of power within the office and who will blame others for their mistakes or will try to demoralize the efforts and abilities of others to make them feel better about themselves.
These guys are expert at exploiting other person’s honesty against them. The only way they could take advantage of you in the first place is because of your honest attitude. So, here in fact your troubles come not from your weakness, but from your good qualities.
These guys always work in group and go strictly by the process, writing the process if necessary. They silently lay the trap long in advance, using right measures to do it. You did not notice it coming, but it was long in coming.
There are several ways we can surpass these actions
Firstly, don’t be afraid of them, they are often more friendly to people who aren’t scared by them and more eager to listen to alternative ideas. If somebody tries to demoralize you in a meeting, do not get drawn into a heated argument. Simply be bold and confident, but not aggressive, when making your points and if their behavior continues, peacefully take your leave and if you are asked why you did that later, just say that you found that the meeting was becoming more negative.
Your only other option is to just give up and I am not a quitter, how about you?