Yes, it's definitely possible - I've managed to break $1000 for the last 3 months, but it took a lot of work to get there, so think of it as a long term aim.
I think the easiest way to do it is to write as many amazon focused hubs as you can in one or more niches. This means writing about products. One successful hubber I know writes only about children's toys and has got to $1000 per month quickly - about 6-8 months - another writes about pet products and she makes much more than that but has been writing here longer.
Another great hubber, sunforged, has just written a great article on earning $100 per day which you might be interested in: http://hubsacademy.com/hubpages-income/make-100-do...