「...分だけ」 e.g. 「せめて自分で使う分だけのお金は自分で稼ぎたい」 I want to make at least as much money as I spend. 「私は食べた分だけ太りました。」 I gained as much weight as I ate. 「涙を流せば流した分だけ、幸せになれるというもんだ。」 They say that the more you cry, the more happiness you'll eventually experience. They say that you can attain happiness to the extent that you shed tears. Hope this helps

自分で使う分＝自分で使う（もの）の数量です。英語だと、the amount of things you use yourself　だと思います。