I finished the homework perfectly all by myself.
That's the color you can only choose if you are confident with yourself, isn't it?
Of course I talk to myself. Sometimes I need expert advice.
You have your self part. Part of your self is you. This is oneself. This is myself. Wait, who is this part of me? You're not sure... wait, no, it's myself. Is it? Be a little psychotic for a moment as you try to remember this vocab word.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.