Start to confess the scriptures over yourself everday even several times a day until you see breakthrough. Speak life not death over yourself. God has not given you a spirit of fear but a spirit of power, love, and a sound mind. Also go to your Dr.and make dure your not low on vitamins and such. B12 can have an effect on moods especially if it's low. I have struggled with things as well but continue to seek out answers and healing. God will provide the answers but you got to take action.
I stopped my anti depressants because they were actually making me worse. I started exercising at 4 times a week at the gym and started taking 5 HTP it builds serotonin naturally. That with vitamins has helped me a great deal but I still do struggle at timed but it's a lot better. I'm not saying this is what you should do but seek medical help first and the word of God. I am saying their is hope! I am proof. Good luck and I am praying for you.