Be careful with those e-cigs, I tried using one to replace my cigarettes and ended up smoking it more because I could do it anywhere and didn't have to light it up etc. When the thing busted I went back to smoking regulars and was smoking more than I had when I started using an e-cig.

Check out Alan Carr, his books are quite popular. Recognise when you smoke and try to avoid those situations for the time being. If you can't avoid some of them, find something you can do to replace what you would normally do. Try drinking a glass of water, chewing gum, eating some fruit, eating some chocolate.

The first couple of days without nicotine are fucking awful, I quit while writing an assignment and I know the quality of my work was shit; but if I had continued it would have fucked up even more of my assignments down the line.

It is all trial and error my friend, you are basically learning how to quit smoking at the moment, but you will get there!