自分の食い扶持を稼ぐを英語でなんと言うか？

8:53 you gotta earn your keep in this world. 自分の食い扶持は自分で稼がなくちゃね。

Amazon's Jeff Bezos looks to the future l SyokMedia.com
http://www.youtube.com/watch?v=PLxO7MPUKH8 2:07 since logging was banned, tourism has become the only way the elephants can earn their keep. 森林の伐採が禁止されてからというもの、ゾウが食い扶持を稼ぐ道といえば唯一観光産業で大道芸をお披露目することくらいだ。

練習問題解答
b-6215 earn his keep