Another one I learnt from my own Sensei and incorperated into our Dojo rules.
In a world of selfishness, following this life lesson changes your outlook on a day to day basis. It moves us away from selfishness towards compassion and empathy.
If you can finish the day, knowing you did no harm, no deliberate harm it was a good day.
No harm physically, mentally or verbally.
Words can hurt more then fists and may hold a profound effect much longer lasting then physical damage or bruises.
A friend of mine, at the age of 50, could still remember the taunts and nasty comments he received from the bullies in primary school, almost 40 years previously. And those comments still haunted and hurt him. If he had been physically injuried as a child, those injuries would have healed a long time ago.
Students are taught to control their temper so as not to say something in anger they may regret later.
How can your existance today improve someones life today?
Can you find the time and will to make a differnce in the world around you?
Can you be of use to a loved one, a friend, a stranger today, tomorrow, everyday?