Ah haha are you me? My situation is exactly the same - your comment makes me feel much better that I'm not the only one!

A few weeks ago I talked to a recruiter who confirmed that I'm being underpaid. Since then I've struggled to stay motivated, but I also really hate job hunting/interviewing etc. I'm technically self employed, working for a single client, so I'm considering telling him that I'm going to take Fridays off. If he doesn't like that idea I'll start job hunting for real.