Look for passion to assist people from all backgrounds. Integrity and honesty are essential qualities and testemonials from previous clients will be important. Don't be afraid to ask for them, it's about you putting value on yourself. Trust is vital, do you instinctively trust the person, do you dislike anything about their manner, behaviour or what they say. Ask what their three highest values are, if client success is not one of them find another coach! Do you think they will hold you to account on your own targets/goals and challenge you. How will they support you when times are bad, do you think they have the strength for this? What are your first impressions on first meeting. In the first 6 seconds! Trust yourself to know if they are right for you.