This is going to sound dumb and you probably have heard it before but.... DO Something

You're looking at the whole picture and it's dragging you down. You've become overwhelmed with everything that needs to be done. Your frustration is driving (not sure that's the right word) you into non-action. It's a vicious cycle playing over and over in your brain.

Try taking just one project, divide into smaller proj. (steps) and complete that one thing. The concentration of working on that one part keeps you focussed and you are less likely to think about the "whole" picture. The success from completeing something helps to keep you moving.

My spelling is probably atrocious and typing not but better but I hope I made some sense. Should listen to my own advice!

Good Luck