If a problem is fixable, if a situation is such that you can do something about it, then there is no need to worry. If it's not fixable, then there is no help in worrying. There is no benefit in worrying whatsoever.

A calm mind helps our human intelligence to assess the situation realistically.

If you think you are too small to make a difference, try sleeping with a mosquito.

If I say, "I am a monk." or "I am a Buddhist," these are, in comparison to my nature as a human being, temporary. To be human is basic.

Happiness mainly comes from our own attitude, rather than from external factors.

Until you have the inner discipline that brings calmness of mind, external facilities and conditions will never bring the joy and happiness you seek. On the other hand, if you possess this inner quality, calmness of mind, a degree of stability within, even if you lack the various external factors that you would normally require to be happy, it will still be possible to live a happy and joyful life.

To my mind, there are two things that, in life, you can do about death. Either you can choose to ignore it, in which case you may have some success in making the idea of it go away for a limited period of time, or you can confront the prospect of your own death and try to analyze it and, in so doing, try to minimize some of the inevitable suffering that it causes. Neither way can you actually overcome it.