I always recommend that first time buyers be vigilant in processing everything they can find inside the units they win - not necessarily because they're going to turn a healthy profit from each and every item they find - but because doing so sets the base of self-discipline that you need to turn steady profits with storage auctions.
Before I got into storage auctions I worked with eBay for a long time and saw many small and large businesses whose entire income stream was based off eBay. Some people understood the basic premise of processing your inventory intelligently - doing your research, refurbishing what you could, and then listing absolutely everything up there once.
More people, however, even the ones that had been selling on eBay for years, got stuck in that same old loop of hoarding crap that is simply not worth the time and effort and re-listing fees .They get so fixated and emotionally attached to the stuff that has proven to them, time and again, that it won't move. It still baffles me.
Guess I don't have the hoarding gene. Anyway, to make a long story short - I think it's great to learn how to force yourself to go through everything, especially in the beginning. Eventually you will hit your rhythm in determining what is junk and what can be sold. Even if you have a bunch of small items that only sell for a few bucks a pop, if you are diligent about listing and shipping them, pretty soon they add up.