He should stop his selfish behavior.

He studies in the library every day for self-improvement.

She emphasized the importance of self-determination.

He should stop his self-destructive behavior.

The robot initiated the self-destruction program.

As a result of his self-defeat, he lost the match.

He fell into self-loathing.

Every day, I use autosuggestion to boost my confidence.

He is so narcissistic that he doesn't listen to others' opinions at all.

His self-assertion is too strong, sometimes causing trouble for others.