Every time I'm writing a book I'm grateful to Benjamin Dreyer, who suggested that every writer should try going a week without using:
* very
* rather
* really
* quite
* so
* of course
* in fact
It's astonishing to search through a draft to find these words. In almost every case a sentence is better off if you just delete them. On rare occasions they serve a purpose, but it's possible to reword in order to get rid of them. But I'd like to train myself not to use them in the first place!