If you develop a pure and sincere motivation, if you are motivated by a wish to help on the basis of kindness, compassion, and respect, then you can carry on any kind of work, in any field, and function more effectively.
Too much self-centered attitude, you see, brings, you see, isolation. Result: loneliness, fear, anger. The extreme self-centered attitude is the source of suffering.
It is important to reflect on the kindness of others. Every aspect of our present well-being is due to others' hard work. The buildings we live and work in, the roads we travel, the clothes we wear, and the food we eat, are all provided by others. None of them would exist but for the kindness of so many people unknown to us.
As free human beings we can use our unique intelligence to try to understand ourselves and our world. But if we are prevented from using our creative potential, we are deprived of one of the basic characteristics of a human being.
Nonviolence is the only way. Even if you achieve your goal by violent means there are always side effects, and these can be worse than the problem. Violence is against human nature.
If we ourselves remain angry and then sing world peace, it has little meaning. First, our individual self must learn peace.
This we can practice. Then we can teach the rest of the world.