Write even when you have nothing to say
whattofix.com
whattofix.com
Learn the craft of writing now, while you have time. When it's time to write your thesis, it's too late.
I like that and plan on stealing it.
Not that this quote applies to me, but it's germane: Bad artists copy. Great artists steal. - Pablo Picasso
The point being that everything you write does not have to be unique or earth-shattering. Many times what we call "writer's block" is simply applying a perfectionist mindset to the act of writing.
Ommwriter (http://www.ommwriter.com/) is a great writing tool to keep distractions at bay and focus you on your writing. There's a free version, but the better version is also quite inexpensive ($4 I think).