/ic/ - Artwork/Critique

I havent drawn much the last two days (less than two hours each) but my hand still feels really tired. Like the muscles are tired and need rest. I feel like a waste of a human being when i dont draw for at least 4 hours a day though. I already taken lots of days off drawing this year.

Again, my hand isnt hurting. Just tired all the time. What should I do? Is this normal for artists? I definitelt need to draw from shoulder and elbow more but all i draw on is A4 sheets and a tablet roughly the same size so its not so easy.