hey /sci/

i have a problem, i was diagnosed with ADD, and ive lived unhealthy for a long time, and failed school. ive just started going back to school at 24, and ive been actively eating healthy, and doing daily cardio and calisthenics significantly boosting physical health.

but, sadly my attention span is still very shit, and i have an intense repulsion to sit down and study probably due to a lifetime of failure.
i want to maximise my potential and find out what my ceiling is, but my ADD and fear of studying stand in my way. now i have experience in physical buildup, where you practice each day and you tolerate more and more excercise. can i do something similar to my brain? where i can increase mental discipline, focus and overall sharpness of my mind?

please help, sci