I don’t need a reason to be fearless.

 劳动分工受市场规模的限制。

我不是专横，我就是老板。

Doublethink means the power of holding two contradictory beliefs in one's mind simultaneously, and accepting both of them.

解释：饿了再吃，粗茶淡饭味道也像吃肉一样可口。安稳走路就不会感觉到劳累，权当坐车。