Change your beliefs - change your behaviours
What beliefs are we talking about here? We are talking about 'core beliefs'.
If you are a male who believes that "real men" are rough, tough, never shows emotion and certainly do not cry then your behaviour will reflect this. While this belief works for you and your relationships then there appears little reason to change. If however this set of beliefs are becoming difficult because your behaviour is perceived as unacceptable then there is good reason to change.
This is just one example of some people's beliefs. There are almost as many beliefs as there are people. The principle remains the same that if you need to change your behaviour then you will need to change your beliefs. Some people are aware of their more problematic beliefs, many are not and require help to achieve the required changes that is unless you believe that you should be able to sort everything out yourself.
That sorting out, dealing with etc... usually means emotional/psychological issues. It does not usually mean in terms of a physical need. If we break a bone or catch a disease we go to a health professional. If we have an emotional problem there is no logical reason why we should try to fix it without going to a professional Counsellor. Some things are easier to deal with than others, according to the person concerned. There is a direct correlation between our emotional/mental health and physical health. Many people would recognise the fact that when under stress, for example, they are more susceptable to colds and flu and other more serious issues and therefore if you change your belief, your behaviour will change and you will be less likely to get physically sick.