If you realize that all things change, there is nothing you will try to hold on to. If you are not afraid of dying, there is nothing you cannot achieve.
Treat those who are good with goodness, and also treat those who are not good with goodness. Thus goodness is attained. Be honest to those who are honest, and be also honest to those who are not honest. Thus honesty is attained.
Life is a series of natural and spontaneous changes. Don't resist them - that only creates sorrow. Let reality be reality. Let things flow naturally forward in whatever way they like.