I'm having one hell of a time writing my thesis! I'm writing it as I go because I like to think in terms of systems engineering (breaking things down into blocks). I'm certainly no where near done with my research; however, there are lots of stuff I have done that can be written up now. Our advisor gave us some good rules of thumb, such as: -Every sentence that starts a section should summarize what the section is about. -Say the most using the least amount of words. Don't say something in two lines if you can say it in one. This is whats really, really hard. I've found myself spending over an hour to write two lines! But those two lines can replace an entire paragraph when done correctly! It doesnt help that LaTeX is very finicky.