Matters of great concern should be treated lightly.” Master Ittei commented, “Matters of small concern should be treated seriously. - Yamamoto Tsunetomo

This is the substance of the Way of the Samurai: if by setting one's heart right every morning and evening, one is able to live as though his body were already dead, he gains freedom in the Way.
his whole life will be without blame, and he will succeed in his calling.

If one has no earnest daily intention, does not consider what it is to be a warrior even in his dreams, and lives through the day idly, he can be said to be worthy of punishment.

To think that being righteous is the best one can do and to do one's utmost to be righteous will, on the contrary, bring many mistakes. The way is in a higher place than righteousness.