Hi hummingbird,
I just started a new job myself. I was very nervous about my first week, and still have so much to learn. I came home exhausted each day, but it was a good exhausted. This is all normal, and expected when starting a job or career.
I hope and pray your son will decide to return to counseling. Learning to deal with all of life's challenges and emotions may go a long way to helping him succeed.
Sending prayers for you and your son!