Worry kills more men than work.

忧虑比劳累更伤人。

Today is the only time we can possibly live. Let's not turn it into a physical and mental hell by aimless worry about the future. Let's also stop fretting over the blunders we made yesterday.

--- Carnegie

今天是唯一我们能真正生存的时刻.我们不要因为对未来盲目的担忧，而把今天变成是一种身体与精神上的炼狱.让我们也停止为昨天所犯的过失烦躁.

There is nothing to worry about; there is no need to be concerned

没有什么担心，也没有担心的必要

Don't worry! Everything will be all right.别发愁，一切都会好的。