First off you are looking for advice without giving enough information which, I guess, since this is a blog, you might not be able to do so. Having said that I think you should take into consideration the following:
- Gender: If female another female may be in a better position to help. If male he might be able to identify and receive from another male more effectively as well.
- Job description: Are we talking about the receptionist, the file clerk, the president’s secretary, the delivery person, a admissions rep., or maybe a FA rep.? Maybe they are bored and need a more fulfilling job description. Would going back to school motivate them? Would attaining more responsibility lift their sense of self worth? Or maybe it is the entire contrary; he/she has too much responsibility and does not feel that he is producing up to par with what is expected.
- Some people, especially non-team players, struggle with feeling victorious when things are good because of the effort the team put out. They feel better by recognition of personal contributions or accomplishments.
- Has something changed in this person’s personal life? Maybe he/she needs some counseling. Sometimes personal problems start weighing on our jobs especially when they are of the non-communicable kind.
- Cultural considerations may come into play. A counselor of the same cultural backgroung would be best prepared to help.
I hope this helps to jog some ideas and that your coworker overcomes this temporary situation.