I overuse certain words in the first draft:
Pretty (much) (certain) (sure)
Almost all adverbs (and weasel words!). It amazes me how easy it is for me to read over them, and how frequently I do use them. Particularly in the fiction blog I kept for a year, where I barely polished during the first draft, but even on re-reading a manuscript I've polished and re-polished, these lazy words are everywhere.
I am by nature a qualifier, it seems.