A local artist explained that sometimes he has so many projects that he feels overwhelmed and stuck. In times like this, he lines up his paintings, sets a timer, and commits to work on each of them for a short, set time, something like 10-15 minutes. One by one, he makes focused progress and feels better about life.
I have found this is a great way to stop feeling overwhelmed about my own tasks. I think it works, not because I get a lot done in 10 minute segments, but because it trains me to focus. Once I regain my focus, the unhelpful panic recedes and I can move freely within my world. I am no longer hiding from a difficult job or feeling shame for neglecting something. This strategy works for me, especially on a task-heavy Monday.