It's important to believe in yourself.

You should protect your own health.

In order to achieve self-realization, it is important to understand oneself and make the most of one's abilities.

She uploaded a selfie to Instagram.

She took a selfie and uploaded the photo to social media.

He likes talking about himself and often talks about his experiences and thoughts.

He set out on a journey of soul-searching.

Since that's his own concern, we better not interfere.

He should stop his selfish behavior.

It's difficult to understand his explanation.