Get plenty of sleep the night before, try to get some form of aerobic exercise daily, start working on whatever task you need to focus on within 30 minutes of dosing (ideally before), stay hydrated, turn off notifications on your phone and block addictive sites, wear noise cancelling headphones. If you're going to listen to music have it on random shuffle so that you don't have to break focus to change the music yourself.

You may also work with your psychiatrist to try different stimulants. There's Adderal and its side chains, Ritalin and its side chains (mine is one of those - Dextroamphetamine), stimulants bonded to lysine to enforce delayed release, and non-stimulant options.

Don't feel trapped into one option that isn't working for you.

Your dosage might be too high if you're experiencing emotionally empty. I recommend looking into Vyvanse. It's been a game changer for me compared to Adderall.

Stimulants are bad news bro. I was diagnosed as a kid, and my sophomore year of college as well. I also didnt get enough sleep (or low quality sleep), had a terrible diet, etc. You can avoid the grips of amphetamines with regular exercise, mindfulness meditation, keto diet, yoga, etc. It's a bit harder to maintain, but you won't have to take amphetamines.

No, not everybody can. If you can manage it using those topics, great. You're not as far into the "ADHD affect my life" spectrum as other are. Awesome for you.