A willing heart is tired, but a careless one doesn't care.

When you use your brain, if you succeed in the end, you will feel hard-won; If you don't put your heart into it, the result won't matter to you. People who care are tired, and people who don't care mean that when you devote yourself wholeheartedly, if you succeed in the end, you will feel hard-won and very hard; But if you don't do it with your heart, the result doesn't matter to you. This sentence tells us not to be disturbed by things, to be open-minded, to live smartly, and not to care too much.

A willing heart is tired, but a careless one doesn't care. From the new Tang book "The Legend of Luxiang Fairy": those who have a heart are tired, and those who have no heart don't care. There is nothing in the world, much ado about nothing.