I experienced extreme depression and anxiety off and on my entire life until 2006 when I hit rock bottom. I sought professional help and although I refused the anti-depressants that were offered to me, I did agree to psychotherapy to help me release some of the emotional pain from the past.
I found the most helpful tool by far was found in reading personal and spiritual development books and by discovering the deeper reality of
who I am and why I'm on the planet. Good luck on your journey. Don't give up by committing suicide because you'll find yourself on the other side, just as depressed only without a body.