Thanks for the support everyone!
Well, today started off good, my morning was productive. However, the afternoon was an entirely different thing... I started working on a task that got me nowhere, so after a while I just got frustrated. I tried to switch to another homework, but it didn't work, so let's just say I ended up going jogging and doing a bit of cleaning up my appartement for the rest of the afternoon.
I have remarked that since I write my goals for the day before I go to bed, that when I get up, I immediatly get to work. However, when noon comes around, I become less sure of what I have to do, and that's when I start to procrastinate the most. I'm thinking neil007 has a point here: if you have a goal, a mission of some sort, you will follow through. So, I'm gonna try for this week to write my goals twice a day: just before I go to bed (for the next morning), and around noon, to set me up for the other half of the day.
By the way neil007, if The Now Habit didn't work for you, I'm glad you found another way to beat procrastination

I think the key is finding a method that suits you personnality and your working method, not the other way around.
Lifequest