I am worthy.

Some people are serving an indefinite probation imposed by themselves, with no review date and no stated criteria. The work is good, the appraisals are fine, and the probation continues.

Worth gets treated as a verdict that has not yet come in — as though a panel were still deliberating somewhere, and everything good so far had been provisional pending their decision. There is no panel. That provisional feeling is a symptom of the waiting, not a finding about you.