What are your methods to concentrate, and motivate yourself during studying?

How do you encourage yourself to study effectively, and motivate yourself to do it? Do you do anything special to avoid being distracted, especially when you have to work on a significantly boring topic?

My most annoying problem during studying is daydreaming. I listen to classical music, which does greatly help. I also try to think about the end goal of all the studying – and try to view it as just a smaller piece of the bigger picture to get where I want to go.

What are your habits, and remedies for successful study?