Depressed and Anxious

I'm planning on going back to school full time because after I quit my job at McDonald's I felt into a pit and haven't been okay since. I feel so stupid and I feel like no one cares to help me. The family I have is my sister, I feel myself sliding back into that depression when spiritually speaking I'm free and restored. I know what God said. I just have to believe it. I'm trying so hard to keep my sanity and let this play out. I feel so alone, I have no money and no consistent source of income. First I feel crazy and now I'm abandoned. If it's not one thing it's another.