I feel like I can’t keep up with life.

I used to be extremely disciplined around 3 years ago. I studied a 2 year course of early childhood education where I would get the highest grades, i would wake up at 4 am to study, work, workout and go to class in the afternoon…. I really thought i was unstoppable. after all my effort I could go to university but for some reason I was miserable ans started to feel burned out (but i was still with the same intense routine) and thought i didn’t want to perssue ECE so I dropped out and started studying a 2 year fitness course since I love fitness and gym. I decided to stop being so hard on myself with grades so my grades were just ok. I graduated a year ago and idk if i want to do this. I work a part time job in a gym as a PT since may but I’m tired all the time and I’m only working part time. I work during the afternoons so unless i wake up early i don’t really do anything during the day. I started working out less even though i am pushing it so i can get at least 3 lifts in because i love gym but i feel like i dont wanna do anything. I dread going to work because i have to train like 9 people back to back and i feel like i dont even wanna do it anymore which is insane because im NEW to this.
I feel like I cant do anything for myself. I don’t know what to do. I want to get a better job, get a better pay, have a better life but how if imtburned out so quick