He believes that he has supernatural powers.

He is still a minor, so he does not have full capacity to act.

His ability is underestimated.

You should not underestimate his ability.

It's important to believe in yourself.

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.