Well, why can't you? It's possible to achieve this. Just have to find the job and be careful that it's not a terrible job that'll leave you drained each night. Easy!
The key, for me, is not to fall into a rut, in any circumstance (employed at a crap job or unemployed). If you don't like the regular job you currently have, hunt for a new one while you're still employed. Job hunting will cut into your dream chasing time and it can feel miserable searching job boards, however, when you finally land the stable regular job that's treating you well while you pursue your dream, it's magical.
It took me from 2007 to 2013 to finally achieve this level, and I've worked some very terrible job during that time, reached some very depressing lows, and was even completely unemployed in the middle of that time (not by choice), however, that doesn't have to be the status quo. Each night after a terrible day at work, I'd spend at least 1 hour to 2 hours job hunting before working on comics. Job Recruiters are very helpful, however, definitely had to keep an eye out for frauds (like everything else).
I did some job hopping. Animator at a simulation company for 1 yr to Caricature Artist at Seaworld for 3 yrs to Rhinestone GemMaster Designer for 3 yrs to finally my current golden regular job Animator (finally again).
Never give up, Never surrender! Goonies never say die! Kick at the darkness till it bleeds daylight! And stay positive and persistent for change.