A Matter of Perspective
While people can be categorized in numerous ways, most people fit into one of two groups: Those who focus on the negative aspects of their lives and those that try to look at the positive.
Life is hard for everyone. Trouble lurks around every corner along our journey to wherever our goals are. And through that journey, there are two major options to take when looking at how your journey has been.
You can either focus much of your memory on the mistakes you made, the bad choices you took, and the negative personalities you had to deal with.
Or you can appreciate the progress you have made despite those shortcomings and negativity that surrounded you.
Great people in the past also had those two options. Had they resigned to looking at the bleakness that discouraged their progress, their names would only have been remembered by their friends and family, and forgotten once they reached the grave.
So whenever a negative thought crosses your mind, find something positive to throw your attention on to keep on moving.