I used to cut my own hair when it was longer. But, then b/c I was showering, washing and styling it in the morning, long become too much of a PITA (and the everyday drying/styling really fried it). The PITA/fried combo plus the fact that I thought I needed to look "professional" led me to start paying to have it cut short.
Almost a year ago I went no-poo (
http://en.wikipedia.org/wiki/No_poo). This has changed my hair such that it does not get oily for a couple of days (so I now shower about every 2 days in the evening letting it air-dry instead of every morning and drying it), and it has more body/texture, so I don't have to style it. Also, since MMM, I've decided fuck going to great lengths to look in a way that is someone else's idea of "professional." I'll look generally put-together, but like me; I'm out of the rat race.
Bottom line is that I'm growing it long again. And I just used the ponytail method to trim it myself.