To live without regret, we must have a concrete purpose, continually setting goals and challenges for ourselves.

This lifetime will never come again; it is precious and irreplaceable. To live without regret, we must have a concrete purpose, continually setting goals and challenges for ourselves. And we need to keep moving toward those specific targets steadily and tenaciously, one step at a time.

Wisdom for Modern Life by Daisaku Ikeda 26/6