An effective psychotherapist or counsellor:

Can explain the methods and approach they are using in easy to understand language.

Behave in a professional manner, and will not enter into another relationship with you while attending them professionaly. e.g a business relationship, an intimate relationship etc.

They will not expolit you in any way, or use any of the information you disclose to further their own interests.

They are a member of a professional organisation and abide by a Code of Ethics.

Look to a trusted GP or other medical professional for a referral if you wish to seek help.

See also the following article from Oct 27th Irish Times.

http://www.irishtimes.com/newspaper/newsfeatures/2007/1027/1193396297466.html