I was rejected for an internal promotion even though I was the most qualified.
I later learned that the person hired was a friend of the hiring manager.
I got tired of office politics and started applying to other jobs.
Within a month, I found a much better job.
Three months later, my old company asked me to come back.
I told them, "No thanks."
Stop telling yourself you're not qualified, good enough, or worthy.
There's nothing as painful as staying stuck somewhere you don't belong.