A close friend just wrote me that he was frustrated because his job is unsatisfying. I responded:
Instead of allowing negative feelings of being "dissatisfied," MAKE reasons to be proud of your excellent service. FIND some way to authentically touch everyone's heart. REJOICE when you meet someone who shows appreciation. At the end of the day, REFLECT on the positives instead of the negatives.
Since you can't change your situation today, stop beating yourself up. RESOLVE that the negatives you encountered, you will try to find ways to either improve or defuse it. Oh, and finally. ... On the day you can move forward to a better place, be proud you held yourself to a positive, loving, high standard of character & integrity.