I've had days like that. I've found that the first time I don't hit anchor is the critical moment. If I shoot the next shot, or any of the next few shots, without hitting anchor, then it becomes almost impossible to correct for the rest of the tournament. I can enjoy a tournament when I'm not shooting my best for whatever reason, but I can't enjoy myself if I feel like I don't have control over my shots. So I've found that if I at least come to anchor on the next shot, and think about nothing but coming to anchor for a few more shots, even if I don't do anything else right, then the pressure seems to ease up and I can start focusing again on the other things I should be doing to hit the target.