Everyone can become an expert in some field. An awesome counselor becomes a renowned authority because of people well-counseled. A pro-golfer becomes a moral role model for young people. A basketball star becomes a hair style trend-setter and informal international negotiator with North Korea. A Rubic's cube tutor becomes a famed blogger that network news wants to interview about social-political matters.
But, is it wise to hire life coaches or psychotherapists to help set and achieve our life goals, rather than product managers who know profitable scalability? I wouldn't ask my neurosurgeon to clean my kitchen; better a house cleaner.