You know, I feel ya. It's a great goal. But you don't have anything to prove. Unless you plan on competing it's not something to hurt yourself or beat yourself up over. There is always something you can get stronger on RIGHT NOW and feel good about that while your working on the bench or whatever.
I mean the other day I was doing Anderson front squats and it was this amazing day...I just shot up about 50 or 60 pounds on them just like that. I felt great about it.
Then I did some banded de box squats. And I felt so damned powerful I decided to hit some heavy too. And they felt like feathers so I decide to go for a pr. Haha. And i missed it. Didn't hurt myself by I had convinced myself it would be easy, lol. Forget all the other work I had just done!
So I got all pissed about it and had to catch myself..I had just set a HUGE pr on the front squats and had a fantastic session. I know it's worse when you a plan to hit a big max in advance but if you can always tell yourself there are plenty of other walls to climb, it helps.