Ask HN: How to start a netsec career from scratch, after depression and at 30?

After spending a few years unemployed treating my depression, and finally finishing my degree last fall (BA in geography), now it's time to get a job - problem is, I've never had a full-time job and I have no recent work experience or portfolio.

I would like to get into the cyber security / netsec field. My most recent part-time job was at college, making forms in Drupal and updating websites - very basic stuff that I wasn't interested in. I've been programming and using computers, though, for 20+ years. Fizzbuzz is simple, I've set up routers to break into with Metasploit for fun, I can easily throw together a LAMP stack... but I feel woefully unprepared for a career or even a technical interview (eg. recently I've worked a few side gigs installing printers or setting up filters in Outlook). Reading about sample interviews just makes me feel like I know next to nothing, and my long period of unemployment doesn't help.

What would be the best steps for me to take to get some sort of junior-level job? Should I focus on a sample application, a personal website? I'm located in the Atlanta area and would relocate to New York. Thank you for any and all advice!