my tuppence worth: make yourself some forms/ have a note book and try to remember to write in it if you are trying to take a decent pic; something like: film/f stop/speed etc but dont worry about it too much if you are taking general snaps.
Use a simiular type of form in the darkroom, stating film/developer/temp etc and relax and make it part of your routine so you don't have to think about it too much.
Stick to a combination of film/developer you are happy with but once in a while go and buy something different and experiment. Write it down and play.
If you have a film to process look at your old negs, find a good set, look up your notes and use that as a starting point.
Don't get too hung up on things like the Zone System, film density, f stop printing; they will come in time but do rate your camera.