First, make sure your form is alays spot then when you have that pegged down you have to get the weight out of your head. Find the weight you are "weirded out by" and skip it. I have a thing for 315 it "feels" heavier to me than 335 for some stupid reason so guess what I just skip the 3 wheels and do a little more. I know that sounds crazy but it's true.
Another Jedi mind trick is to not think "I'm pressing 230#. Think "this is 5 lbs more than last set-that I just smashed... it's only 2.5 lbs PER ARM..I can lift 2.5 lbs damn it! Then smack that shit up!! If you think you can you will..If you can't visualize yourself doing it you won't.
Maybe try adding some board presses to your routine. You'll be able to handle heavier weights with the lessened range of motion and build confidence and get used to handling heavier weights. Then when you go back to your chest you've done weight heavier than that so you'll think it's easy. For example I can do 425x3 off a 2 board so when I go for a max with say 380 it feels lighter because I've done so much more with the boards.
Whatever you do don't neglect your general training and nutrition regimen. Shitty training = shitty results and a certain size muscle will only be able to do so much work or else everyone would have 500# benches. Like Tate says..." you can't flex bone", Good luck.