You may need to learn new skills so that you can behave differently. Putting other people down. If you are always negative and are constantly belittling friends and relatives your relationships will suffer. You may need to learn better ways of communicating. Problem solving therapy.
Problem solving is often a part of other therapies.
However, more recently problem solving has been used as a short term therapy in its own right. Recognise your strengths and weaknesses and what sources of help are available from family, friends, support groups etc. Learn a systematic way of tackling problems that can be used now and in the future. Learn to put solutions into practice and to deal with the obstacles and setbacks. However, there are great variations in availability according to where you live and therapists are still a scarce resource.