Choose a teacher who practices what he or she preaches. Teachers can be charming, entertaining and provocative, but if you choose based on anything other than the vigor and authenticity of their practice, you will surely be misled.
Choose a teacher who has time for you and a practice center you can get to, or your spiritual life might be little more than intellectual tourism. You can find lots of information and opinions on the Internet but it will never take you anywhere new. As long as you view yourself as a dabbler, you are holding yourself back from the wholeness you seek.
The quote she remembers from Maezumi Roshi speaks very strongly to me: “Choosing the wrong teacher is worse than having no teacher at all.”