When I am experiencing some difficulty in my life it is not always easy to focus on the positive aspects of the situation. But, when I really think about how I am feeling I can change that fairly quickly.
Most of that is because I don't like the discomfort of the negative emotion. Anger, frustration, disappointment.... all of that is a big waste of time and energy. I go there as easily as the next person but I try not to stay there for very long.
My life and happiness are much more important and when I start looking at the fantastic opportunities that have just opened up I can easily see the positive aspects!