One thing I would say in disagreement is that you can use filters and labels to your advantage even with this mentality. I agree that keeping things labeled and archived hasn't done me much good. Lately what I do instead is use filters to label things by category, just so I can archive them faster. As I archive, I also remove the label. For instance, "Newsletter", "Transaction", etc. When I look at a bunch of things of one type, I don't have to make as big a context switch between them, and I can quickly determine which I care about. ("Recruiter" is a fun filter that is a perpetual work in progress.)
