What's helped me cope with pressure from bosses was the realization that when they're shitting on someone, it's usually because their own boss is shitting on them (and on upwards). Then it's less personal, less an issue of someone in authority judging your performance, and becomes more of a team effort/problem: I will try to fix the issues, so that my boss's issue goes away, so his boss's issue goes away, and then we'll all be happy.