Here are my tips to help you force yourself to write.
1. Set daily deadlines.Instead of a far away deadline that allows for easy procrastination, set a deadline for today. That way, you can only procrastinate to the end of the day. I've been doing this for the past few days with rewrites on The Clockshifter. I try to write a little bit in the morning and finish up my 1000 words right before I go to bed. Obviously, that's different on weekdays because I am not going to get up extra early to write before school. (I'm so not a morning person.)
2. Love your keyboard.
I just got a new computer and I am in love with my keyboard. It allows my fingers to fly across the keyboard almost as fast as my brain can think of the right words. Having a good flow of thought to page really helps you get in the storytelling mood.
3. Be ready to write a little by hand throughout the day.
Sometimes at school, I get a random piece of inspiration and I must jot down a scene. I can type it up later. Also, it does give your routine a bit of a shake-up, which can eliminate some writer's block.