>>11190103>>11189163ADHD retard reporting in. For fastest results go running in the morning. Science backs this up. For long term results, meditate and train working memory (dual n-back) every day. Science also backs these up. N-back might help memory but it will absolutely help willpower. For studying, break information into "atoms" (questions and answers) and put them into Anki.
For meditating use Waking Up app by Sam Harris. It is paid but you can get it free by emailing them politely. Worth it. (Also i think first 5 days are available for free) I meditated for years and this course is better than anything else ive tried.
Most important realize it takes discipline to build discipline. Your results will seem unbearably slow. Every effort will help you a tiny bit. Eventually the tiny bits start to add up.
Good luck