I faced the same issues 2 years ago when I was diagnosed with ADHD. I had so many troubles in learning and my all relations broke due to my behavior. I started doing exercise for at least 10 minutes/day to get good sleep. I used alarms to track my time and activities. Nobody was believing in me at that time, so I started believing in myself. At work I ended all distractions I put my desk towards a wall and kept my workplace free of clutter. I started eating healthy meals as unhealthy diets increases your ADHD symptoms. That’s how I’m coping up with ADHD. You can also do this & get back your original life. Good luck!