一点一点改变你的习惯，不要气馁。

Little by little change your habits, but don't beat yourself up over it.

youdao

只在今天努力改变你的习惯。

Commit to changing your habit for just today.

youdao

在开始改变你的习惯前，好好想想你的动机。

Before you start your habit change, think through your motivations.

youdao

Let's say, just say that you're wanting to change your own diet to improve your health.

比如说,你想改变自己的饮食习惯,使自己更健康

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选