(idiomatic) to cause concern, to be worrisome, to be on one's mind / to be interested, to be curious

to give off the sense that ~ / to feel that ~; to think that ~ / to be in the mood to ~

myself, oneself

a photograph of oneself, a photographic self-portrait / (especially) a selfie

to take a photograph of oneself, to take a selfie

talking about oneself (especially, when the audience is not interested)

soul-searching

one's own concern or problem

(idiomatic) selfishness, self-centeredness

everything