Cognitive Behavioural Therapy (CBT) is a talk therapy that can help you manage personal and life challenges by changing the way you think and behave. CBT is based on the concept that your thoughts, combined with your actions as well as feelings; which includes emotions and physical sensations are interconnected, and these thought errors and feelings can trap you in a vicious cycle.

CBTs primary focus is to help you deal with overwhelming problems in a positive way. This is done by focusing on breaking them down into smaller parts: your thoughts, physical and emotional feelings and actions. You will learn how to change these negative patterns or thought errors to improve the way you feel. CBT deals with your current problems, rather than focusing on issues from your past. You will work towards identifying practical ways to improve your state of mind on a daily basis.

http://www.nhs.uk/Conditions/Cognitive-behavioural-therapy/Pages/Introduction.aspx