Ask HN: How to be honest on a resume/job interview with a poor job history?

I got a CS degree in 2011 and I've been trying get my CS career started since then. Unfortunately, my job history has been patchy to say the least. I average about 3 months per company with gaps in between. Obviously, this doesn't look great on a resume and I'm often asked why this is at job interviews. I don't really have a good answer for this. I just find work very overwhelming to the point where I quit. I try to grit my teeth and get through it as much as possible but I always feel like I'm at my ultimate limit. Is it worth coming clean about this in a job interview? How can I present this information without being dishonest?