在这个世界上能为别人减轻负担的人都是有用的。
No man is useless in this world who lightens the burden of someone else.
You must take personal responsibility. You cannot change the circumstances, the seasons, or the wind, but you can change yourself.
If you can't fly then run， if you can't run then walk， if you can't walk then crawl， but whatever you do you have to keep moving forward.