My Husband Wants To Be A Rock Star

Tina is 38 years old, has been married 14 years and has two kids. She and her husband are members of a cover band and her husband has taken it upon himself to become the sole guitarist in the band. A new guitarist, who is much better, has joined the band and now Tina's husband is expressing dismay and jealousy. How can Tina be supportive, but remind her husband that his main responsibility is to the health and welfare of his family and not being lead guitarist?