This may sound strange, but finding the right therapist is somewhat like deciding on a restaurant when you want to go out for dinner.  Some people want fast food.  Some are looking for the least expensive.  And sometimes people want the most expensive, even if its not the best value for the money.  This means everyone is looking for something different.  I think the best approach is to find out about the restaurant before you plan to go.  Ask people who have been there before.  Call and ask some questions.  And certainly don't go back to a place you didn't like.  The same applies to finding a therapist.  People who do some research before they attend are probably further ahead.  At least they know what to expect.  And that makes the whole experience better.