Remember when you were a child and your parents told you (maybe bribed you), eat all your food and you’ll get some dessert?
Childhood might be a distant memory for most of us but you can use this same principle to motivate yourself into writing. I’ve done it a lot during NaNoWriMo.
I tell myself, once I’ve written for an hour I can go and eat a slice of cake or watch an episode of my favorite show.
Think about your hobby? What do you love to do? Don’t do it or enjoy it until you’ve done your writing. In other words…only if you clean your plate.