When we see the wrongs of others, we should reflect upon ourselves for the same faults. Buddhism is a teaching which shows us how to live a happy, fulfilling, and content life. The purpose of the Buddha's Teachings is to eradicate superstition and clear up peoples' misunderstandings about life. Our goal of cultivation is to attain true happiness. True happiness is undiminishing happiness, withstanding the test of time and conditions.
Love can turn into hate.
You may dislike something you adored yesterday. We should see things with eyes of equality and not let emotions control our lives. Treat people sincerely. We should mean what we say and truly be sincere from the bottom of our hearts. For the health of our body, we should keep it moving.