I usually treat myself to a meal on Friday for all the hard work I did during the week.
I often eat out on Friday to treat myself for a job well done over the week.
英語で、myself who did のような表現をあまりいいません。ほかの言い方を使います。
理由を説明の言葉:
I praised myself for working hard. (for -ing)
I treated myself because I worked hard. (because)
I worked hard so I treated myself. (so)
頑張った
I worked hard.
I did my best.
I hung in there.
よくやった
a job well done
my hard work
一週間
over the week
during the week
that week
アメリカ合衆国 
