Then that's a mental issue. Can't think about how much weight is on the bar and how heavy it looks. What's on the ends of the bar is largely inconsequential, focus on what's happening through your hands. Of course you need to find what works for you, but I find focusing on keeping the bar close and hitting the positions properly and having the confidence that doing so will result in a successful lift is all that I need. Everything else needs to be removed from your mind.
And I maintain that it's awesome when I'm lifting and people think I'm lifting way more than I am because they don't "get" bumper plates haha.