What could cause a great artist to just quit for no apparent reason?

How do you send distraction packing? It’s time to get sneaky. Change your way of working, change the mediums you use, change your subject matter if you need to. Go to your local art store and buy some materials you’ve never tried before. Mixing things up can give you a whole new outlook on things. Who knows, you might even discover your chosen way of working isn’t the best one for you!