When we add pleasure & joy into things we want to accomplish & habits we want to create, we do them.
Dopamine helps to create consistency.
Do you have enough joy in your life & are you making it a priority?
Whether we prioritise it or not our brains will find ways to get it - think procrastination, binging on Netflix, drinking the bottle of wine...
Think about something you want to change in your life - does it currently feel fun? My guess is probably not otherwise you would have done it already.