自分の責任

one's own responsibility

→ 自分
phrase Rare #34,083
one's own responsibility Can emphasize that someone is responsible for something or must make a decision on their own responsibility.
JA: 自分の責任で決めてください。
EN: Please decide on your own responsibility.

それで自分の責任みたいに感じてるんです

That’s why I feel like it’s my responsibility.

— High and Low (1963)

自分の責任で、自分は覚悟している。

I'm prepared to take responsibility for my own actions.

お前が他の人と違うのは自分の責任じゃない

It's not your fault that you're different from everyone else.

— 道 (1954)

自分は覚悟している、自分の責任だ。

I'm prepared to face the consequences; it's my responsibility.

もう大人なのだから、やるべきことは自分の責任で決めなさい。

You're an adult now, so decide for yourself what you need to do and take responsibility for it.