Luck and a fantastic recruiter. In two years I went from doing freelance work online while working in retail to being a low level employee at a startup to being the only local programmer at that same startup to working at a company that really needed my skill-set (mobile development). The recruiter kicked in for the last one, everything else I looked for myself.

Are you asking for your own rates or are you letting other people decide for you? At my previous company I saw a guy exactly our age get hired without any recruiter or anything and the amount of money he asked for was so low it was embarrassing, we hired him quickly due to how much he asked but honestly with his experience and knowledge he should've been paid much closer to what I got rather than we he asked for, but he was young so he didn't dare ask for something fair.

Don't undervalue yourself.