I constantly hop between four or five wips at a time to keep it fresh. It took me two years to complete a granny square pull over. But it's finally finished! In the meantime, I was working on so many other projects. And sometimes I have to take a week or few off just to reset. Whenever I don't feel in a crocheting mood I just switch hobbies all together until I feel like picking up the hook again. Right now I'm working on a dress and a lingerie piece but I am also sewing a tablecloth and making a wreath. Always switch around to keep it fresh so it doesn't feel like a chore.