How to break a bad streak at work?

Ever since a big project/ trip I. March concluded successfully, I felt as if I’ve become a bad worker: I can’t concentrate, I find guidance unclear and confusing, is hard for me to motivated and organized, and it seems that all I do I look like a fool in front of my office lead.

I was feeling a lil burn out in March and started looking for another job, but for some reason doing my actual job feels impossible, as in I can’t go for like a day without committing a blunder

The worst part is that I’ve been at this post for 4 years and I did not had major problems until now. Anybody know of anything to get back my mojo so to speak?