Mostly, I cope and clean.
Adding to my own comment here: I did find that looking at various cleaning methods helped me figure things out. FlyLady is one that a lot of people I know have poked at. A lot of the specifics don't work for me (a lot of her system is designed for women who are at home at least part time, and who have kids.) but the concepts - breaking things down into 15 segments, figuring out where you tend to dump things and paying special attention to those areas, keeping one space in your home/space particularly clean, and then letting yourself say "Oh, if I cleaned 'place next to that' that whole area would look better", etc. work really well for me.
I'm a process geek, so I spend some time reading different approaches and such - and then apply the bits that seem to work for me.