I have had recent experience of this a year ago
I was terrified of anti depressants but as it turned out it was just what i needed, made me feel worse for a few weeks but then suddenly its like a lightbulb is switched on in your brain and you can see the bigger picture.
I also had CBT and started yoga which i highly recommend (Yoga that is CBT didn’t seem to work for me)
One really important thing to realise is that you can and will get better, it does take time though.
I started a thread some time back if you fancy a long read,one thing it shows is that you are not alone by any means!
Good luck and stay with it
Link
http://singletrackworld.com/forum/topic/depression-why-dont-we-talk-about-it-your-experiences-please