See it. Say it. Write it.
Use optimal carries. Don't bring packages for other cars with you into a car. If you're doing a stack for picks off the belt, stop it. Use methods and get faster so you don't get a pile of picks. Stop letting flybys go, and you won't have to pick.
If you have cars like PKGS and UPS, and then idk, BRWN and STNK, try and remember them 2x2. So you know the package you have definitely doesn't go into two of them. Try to find something lyrically easy to remember. Like PKGS go with UPS, and some BRWN things STNK. Then label them P1046, U1440, B5880, S6641.
Those aren't real car names but I hope you get the idea.
It helps too if you can stack out an ereg, that keeps egress, and down the side of it write the name of the car. When you walk down the belt you know your last car is that one, and if you have one for your last two it has to be the other one before it. Then on your first truck stack out an erreg, write the car name, and you'll know you're in your work zone by the barriers you've setup.
I've found this helps a lot. Find your own method and work within their methods and you'll succeed. Ask a sup to hang the car name above the bulkhead door so as you're saying "PKGS 8231", holding a box marked P8231, you'll stop in your tracks when you see you're in USAF or whatever your names are.