Depends on your perspective - diverse interests and hyperfixations are part of how we as people with ADHD experience joy and motivation (aka through lots and lots of dopamine seeking). Getting on stimulant meds for ADHD can help calm that down (depending on how you respond to the meds) but ultimately an ADHD brain is wired to find joy and happiness in lots of different mentally challenging or exciting or unusual and unique things (aka hyperfixations and hobbies and studying new things!) I would recommend working on how to navigate all the challenges that come with having an ADHD brain but not looking at your passions and interests and hyperfixations as inherently a bad thing at all. It’s very challenging but still more than okay that our brains seek joy and happiness differently than those without ADHD.