Dopamine is a neurotransmitter located in the brain and is directly related to your mood, focus and motivation. To increase dopamine levels, here's a great website link that explains 10 ways to do it! Why not give one or two a go at a time and experiment to see which make any changes for you?
https://www.powerofpositivity.com/increase-dopamine-brain-boost-productivity/
I've outlined them here to give you taste of the article...
1) Don't get addicted to anything ... (again)
2) Checklist small tasks
3) Create something
4) Exercise
5) Get an activity streak going and record it visually
6) Increase Tyrosine in your diet
7) Listen to music
8) Meditate
9) Take supplements
10) Toxic cleansing