Well, that is very difficult to explain... if I can explain it, anyway.
I suppose there are a few simple rules or aspects:
1.) Draw only when YOU feel like it - not when other people tell you to do it.
2.) Draw only for yourself (except you're drawing a gift).
3.) Don't pressure yourself to "get it done"... draw only when a special idea hits you.
4.) Don't "mass produce" art - sometimes less is more.
5.) Think about a "story" behind your art - and the story continues step by step.
This works for me, anyway.
I usually have no real "plan" when it comes to artworks these days... I just wait until something hits me.
For example... the recent BEASTARS fan artworks I've done... I watched the show and HAD to draw it!! ^^
That was just fun. Something fresh!
Or take this artwork here:
I only knew two things back then when I started this piece:
1.) I wanted to draw a scene at night (cool atmosphere)!
2.) I wanted some mages doing some stuff because they'd have some cool light effects!
And THAT was it!
This simple idea turned into much more... step by step. At first I wanted this to take place in a cavern... in the mountains... but the composition sucked!! So, I thought about a forest (we have lots of woods here) and that was perfect!
It's not easy but the best way is not to force yourself like "I need to draw stuff!!!!!".
Just think about a challenge or an idea... and let it hit you.
If it doesn't... so what? Next time then. ^^
No rush or stress.