I personally would never go with a therapist, lawyer, financial advisor, professional mentor etc that is younger than myself (soon to turn 44). Usually at least 10 years older. This does not apply to medical doctors, for example - in fact, for those I often prefer my age group or younger as they might be more into new technologies and advances. But not a professional whose role is to give me insight and counsel based on life experience, or even just sit there and listen to/talk with me about life experience