According to psychological and educational theories , self-esteem is essential for a successful life.

根据心理学和教育理论，自尊对于成功的生活至关重要。

1 According to psychological and educational theories, self-esteem is essential for a successful life.

1 根据心理学和教育理论，自尊对于成功的生活至关重要。

I'm still finishing my application, and I've already started doing some reading for the course about educational theory, and so on.

我还在完成我的申请，并且我已经开始阅读有关教育理论的课程等等。