(Especially!) if your government doesn't give you access to a therapist or if you don't want to suffer side-effects due to anti-depressants, then do :
1. Mindful meditation [free] -> Daily practice (30+ minutes)
John Kabat-Zinn [0] masters the link between science and meditation and has published very valuable books (including guided/audio meditation exercises) [1]. There are a couple of scientific studies which prove effectiveness [2] [3].
2. LSD [$5-10/dose + $25/multi-use test kit] -> One-time experience (every 6 months max.)
LSD however requires one to literally read/understand/know everything about the substance before applying it (minimum literature: "The psychedelic explorer's guide" by Fadiman). Also, order a test kit and test before you ingest. Certain "edge cases"/people should not try it and educating yourself about everything will allow you to decide if it's a good idea in your case or not. In addition, you may be able to access your spiritual dimension, which increases quality of life even further (it is less immediate with meditation).
You may combine micro-dosing LSD with meditation for accessing the meditative state easier (it's quite a challenge for depressed people).
[0] https://en.wikipedia.org/wiki/Jon_Kabat-Zinn
[1] https://thepiratebay.org/torrent/4180277/Mindful_Way_Through...
[2] http://news.harvard.edu/gazette/story/2011/01/eight-weeks-to...
[3] http://www.vox.com/2015/8/27/9214697/meditation-brain-neuros...