Transactional Analysis is a theory of personality and communication. It is based on the beliefs that:

Everyone is OK.
We can all think.
We all have the ability to decide what is right for us.

Further, the therapy is rooted in the belief that we all have the ability to grow and change. Therapy can be short or in depth and long lasting, it gives the individual the opportunity to discuss and explore their difficulties with someone who is impartial, non judgemental and unconnected with their everyday life.