Persistence is the stubborn diligence of completing some goal despite almost all resistance or difficulty. Where some people give up right away when things get difficult while others continue to move forward despite the problems they face. Most people who achieved great success have experience difficulty in one way or another.
Life is about setting goals and working on those goals to make meaning. We should try and balance our lives out so that we can enjoy each day to its maximum but at the same point we should have some life work we an claim as our own.
People who succeed find importance in their goals. They don't give up and they don't let small problems get in their way. They continue to push forward despite the problems they face.
Persistence is a type of stubbornness that defies adversity. It is not ignorance of risk or an inability to chance strategy but it is the constant seeking and working toward a goal of worthwhile effort and finding new ways to achieve that goal when it becomes difficult.
Such people seem to have confidence that others don't have. They are in the constant search for achievement to either prove themselves to themselves or to leave a positive mark on the world. The goals they seek have significant meaning to them and this is one of the reasons why they continue to push forward.