YOU SAID:

I'm selfish, impatient and a little insecure.

INTO JAPANESE

私は利己的で、気難しく、少し不安です。

BACK INTO ENGLISH

I am selfish, difficult and somewhat uneasy.

INTO JAPANESE

私は自分勝手で、難しく、やや不安です。

BACK INTO ENGLISH

I am selfish, difficult and somewhat uneasy.