So first thing I’ll say is great on you for being honest with yourself that alot of your problems seem to stem from poor preparation and/or study habits. More on that later…
For the near rocks of getting through this ride, it should be the relatively simple pre-solo stuff that requires very little improvisation and athleticism to fly well. Everything you do should be under the “control and performance” concept where you set a known pitch and power setting and get a known result. If you’re not getting exactly what you’d expect from that setting, then make small corrections from that instead of just guessing the correction.
This definitely applies in the pattern and will help control any wild deviations. Whenever you pull closed, pull the same amount nose up, the same bank angle, the same pull to displace you appropriately every time. When you get to that known spot, you make adjustments based on wind for when/where to perch etc. Also, by doing that very rote maneuvering, it will gain you a few seconds of SA to actually assess and get you caught back up to the airplane.
A trick I learned back in the day from the F-15 community was “left hand, right hand, sight picture, feel”. It applies to everything and I personally like it because it breaks things down very cleanly and will set you up for success. Try drawing out the pattern or wherever you feel jammed up and apply that mnemonic. Even your GPS thing, look back at that scenario and think what you could’ve done with left hand (power setting), right hand (probably bank back towards the center of the MOA), sight picture (level turn away from a border now eyes go to GPS to push buttons in a sequence), fee (1G unacclerated turn). Once you’re done setting up, what’s next on your lineup card? Same deal to set up for TP stalls or whatever.
Lots of words there but the last thing I’ll tell you is that worrying about all your sacrifice and hard work won’t do shit to help you on this ride. “Fighting in the air is not a sport. It is scientific murder” said Eddie Rickenbacker. The airplane couldn’t care less about your personal life. Compartmentalization is massive in this business and learn to leave all that behind you and focus on your left hand, right hand, sight picture, feel. Good luck!