When a professional (especially a lawyer), rather than looking for a job, just goes and finds clients. This takes guts and a willingness to work constantly for precious little money in exchange for autonomy.
Law student 1: Hey, you made top 10%. I bet you could get that $160,000 opening at Rob, Ewe, and Howe!
Law student 2: Fuck those guys. I don't want to kiss ass for the next 20 years. I'm hanging out my shingle.