Feeling unproductive

I have been so unproductive this past few weeks, in terms of writing for the thesis...I'm trying to figure out if it has to do with me personally and internally(i.e attitude and habit) or external situations (i.e weather, other people, food, home environemnt etc). When I do look at the list I notice that
1) the first requires a bigger magnitude of effort than the second from my brain and heart ie thoughts and feelings and
2)Actually, I can control or modify these factors if I just push myself more than if I were to pull in...
3) Logically the effort would be less of an effort or easier if I were to start something small and then continue to build it up but then how do I go about this when I know that the small is actually part of a bigger thing? So I guess it should be the other way around right?
4) all this is making me physically have headaches

Ya Allah AlMighty, I pray that you give me guidance adn the will to write this thesis as you are the only pure element able to help me get back on my tracks...