Well, my point of view is that I live in the world, so it really isn't that small of a place.
But, the apartment that I "live" in is actually smaller than yours. On the other hand, it is bigger than my space on the boat I once worked on. (6 people on that boat)
One idea is to get a VERY SMALL storage locker (so that it forces you to use the space efficiently) and divide your stuff into use-it-once-a-year-or-once-every-six-months stuff and things you need once a week or more often. Then, the seasonal/occasional stuff goes into storage.
Also, start a campaign among your friends to not give you "stuff" as gifts. Propose it along the lines of, "Oh, and for my birthday, I'd love for you to come to the party but, if at all possible, please don't bring a gift, your presence is what I want, my friend, presents are not necessary. If you really want to get a gift, please limit it to something that I will enjoy useing up. I love red wine [or whatever]."
I am starting to do the research needed to set up an account for publically traded pollution credits (to take 'em off the market) for some family members who ALWAYS want to send us those "duty" gifts. I've started telling 'em about it and have enlisted the help of a sympathetic in-law to agitate for me, too. So all those $20 here and $40 there gifts could just become $10 each in our remove-the-carbon-dioxide-credits-for-power-plants from the trading stream. And maybe I'll donate all that to an environmental organization someday.
I know this is slightly off-topic, but part of the struggle to minimize the footprint is to limit what comes into your life. A lot of "stuff" that comes in has more to do with what other people think you "need" or what they want you to have rather than what you choose. And, of course, it is very kind of people to want to give a gift (o, ok, yeah, I know that lots of people do aggressive gift-giving ... like to increase guilt, but I'm not talking about that here...I'd like to asume only good intentions), but, it can make things more tricky, too.