Man I have been an obsessive collector for most of my life and im telling ya that the best thing is to NOT sell off your primary collection...
that being said just adjust what you spend ... give yourself an allowance and DO NOT go over that and stay away from ebay.
I have in the past Sold my baseball card collection, Nes collection, and half of my Magic the Gathering collection.
I regret selling all of them especially the NES ... which I'm currently rebuilding along with my lost 2600 collection (at least that wasn't a sell)
just take it easy for a bit ... sell off your duplicates (id keep a couple extra consoles).