How do you keep going after 3 rejections?

I sent 3 applications and heard nothing back, and I am running low on energy. Any experience at all would help. I am sleeping badly and snapping at people. What helps you on bad days?

If you ever feel unsafe, please call or text 988 in the United States. There is help available at any hour.

A fixed routine helped me most: up at the same time, one hour of job search, then a walk. Small but it worked.