I have spent hours and hours and this obsession is tiring me out

For about two weeks now, I have woken up and gone straight to the computer designing things to sell. Most of the stuff I designed I’ve decided ditch it. I don’t know why I’m obsessed. I’m constantly on the computer. At work I am thinking designing. No harm done, not a lot of money wasted. But my time… My partner said no wonder why I feel tired and overworked.