Positive thinking stems from a happy, peaceful and loving state of mind; it’s not very easy to be positive when you feel miserable.
A great challenge is to remain positive in the face of life’s diifficulties. The method that I find most effective is to keep an eye on my thoughts and emotions so thnat whenever I notice some wrong thoughts or feelings I can switch my thoughts to something of happiness. It may be a success, a sweet relationship I have, a wonderful experience or simply create positive thoughts from my imagination. For me it works.
You need to find what method works for you, but often, as we all need newness in our lives, a different method will work at different times.