How does it work?
The symptom that you experience is a product of the subconscious mind. In the past it felt that this (whatever it may be) was the best way to react to a situation and now this is the way it has learnt to always react. Now that you are older, this symptom is no longer necessary. The problem is that the reaction is not in the conscious part of the mind, you cannot just decide to think it away. By examining the subconscious mind we can find the cause of the symptom and reinterpret it, in order to release both the troublesome symptom and the need for such a reaction, which will prevent the problem from returning.