you hit it right on the head. its all about breaking mental barriers. notice that is my location that i have had in my profile for a while now. a lot of lifting heavy numbers is all in your head. i read an excellent article written by Mike Miller about the first time that he ever attempted a 1000lb squat. once you start to thinking about lifting a heavy ass number, your mind might think of the possibility of missing the number, and then you will fail. not necessarily because you can't handle the weight, but because in your mind you had a negative picture about lifting the weight. i remember the first time that i ever made an attempt to hit a 315 bench. i remember looking at the weight, and thinking about how much was on there. right then, i should have known not to even think about attempting the lift, because the thought about it being heavy went through my mind. i ended up getting crushed. the next week, when i made the attempt again, i didn't think about the weight on the bar, all i thought about, and pictured in my head, was my form, and completing a lift. this that time, i killed it, and locked it out pretty easily. ever since then, whenever i am going heavy, the only time that i think about the weight is when it is being loaded. as soon as the weight is loaded, and the clips are on the bar, i switch my mind off from the weight, and focus on hitting the lift. i picture in my mind me doing the lift. i dont picture the weight on the bar. in my mind, i just see myself completing the lift. then i take a breath, and set myself up for the lift. i forget about how much is on the bar. being able to do this has helped me to propel my lifts. i remember the first time that i loaded up 475 on the bar to do a 3board press. i didnt even think about the weight as i was setting myself up for the lift. yeah, i felt the tension after it was unracked, my eyes felt like they were gonna pop out of my head, but never once did i think about how much was on the bar. all i could picture was me completing the lift. if i had though about the weight, i would have failed.