Used to use Meditech, I like Epic better for most things.
Learn the first letters of things, learn to hit things with the ";" in between them. So for "Diminished; lower" I would type dim;low" and it's in. As was said above, don't double chart. If it's within defined limits, then you've already said their lungs are clear. If it's within defined limits, you've already said their pulses are 2+.
Customize everywhere you can to make it work best for you. Use your "wrenches" to make everything work as close to how YOU think as possible. Sure, someone else has x,y,z on their screen, but I want w,y,z. They think x is important, I think x is silly and want w instead. So that's what I have. I've got everything set up as close to how my brain works as possible.
Use the speedbar to your advantage. The flowsheets I use for everyone are there in the order I document on them. So it becomes habit to just click across as I chart. Then the ones I use most often are there next, like restraints, or PCA pumps, blood administration.
After a while, it becomes second nature to go through everything in order, just like you did on paper or whatever you used before. You can also make a little checklist for yourself, things you have to do, on paper for yourself. That way you don't keep going back making sure you did things. I still use that, my brain sheet has a checklist of vital sign times, reassessment times, IV, I&Os that I can cross off when I've charted them so that I don't wonder at the end of the day if I did them. I've now gotten to where it's so systematic for me that I don't need the checklist anymore, but I still like to keep it as my security blanket.
Good luck! I think once you get past the "everyone hates change" aspect of it, you'll learn to like it.