There is no such thing as a free lunch
天下没有白吃的午餐（喻：天下无不劳而获之事)
There is no such thing as a free lunch.
天下没有白吃的午餐。
Success doesn't come to anyone who sits back and does nothing at all.
袖手旁观不努力的人是不会成功的。
You'll have to work very hard to achieve it.
你必须要很努力才能获得成功。
As they say, "As you sow, so will you reap. "
有道是：“一分耕耘，一分收获。”