I think one of the best things I have done lately is getting the nuts to trim my own hair.
I was petrified to touch it forever, afraid I'd screw it up, but I started to find myself wanting to tighten it up right after my hair cut. (My hair is thick and wild and it's hard to get them to thin it enough.) The last couple of months I have started to take a tiny pair of scissors and with just a careful little snip here and there, I can keep it looking much more tidy day to day, can wait longer in between expensive haircuts, and get the spikes and shaping that I want but tend to grow out too fast after my proper haircuts.