The most important role of a fitness professional, in addition to a proven track record of client results, is making sure he or she is prioritizing their goals as well.
While education and seeing client results is key to your decision when hiring a trainer, many will agree that a fitness professional must "have the look" and "practice what they preach. In other words, he or she must be focusing on their own physical health & wellness goals while having the educational background and experience.
Of course, one doesn't want a trainer who is "all about themselves" more than the clientele they have, that's why it's important to do your due diligence when looking into a trainer. Perhaps scheduling a meeting with the trainer to get to know them, their experience & their own dreams and goal setting ideas to further understand him or her and to make a final decision if this person is the right one for you.
A trainer who is concerned about their clientele's habits, perhaps in some cases more than their own, is the best type of professional to have on your side. Your goals are a priority for them, and they're excited to help you take the necessary steps to get closer to reaching them in the shortest, safest and most effective way.