I feel less productive without cannabis

I’m not sure how to exactly start this. I I’ve never asked a question on Reddit before, but I want to start. I’m quitting because I kinda have to in order pass a drug test for a program. I wanna join that will help me get a job in the medical field, which wouldn’t allow me to smoke anyway I’ve also been trying to learn how to draw, (which is relevant) the thing is cannabis helped me a lot with doing things. I didn’t wanna do but sometimes even doing the things I want to do which is like drawing and writing etc I do enjoy these things, but for some reason, it’s just hard for me to force myself to sit down for a long period of time without getting up and walking around the house or something I feel like cannabis really grounded me. It helped me focus on what I wanted to whether it be watching TV drawing playing games and I know that’s probably not a good thing but other than that, I didn’t really have any problems with cannabis it’s hard for me to quit cause it doesn’t really feel like it was ruining me anyway at least not in a way that I can see. I’m only quitting because I really have to. Any advice?