YOU SAID:

I feel very sad because I realize that there is still a lot of work to be done to improve my character.

INTO JAPANESE

自分の性格を良くするためにやるべきことがまだたくさんあると気づいたので、とても悲しいです。

BACK INTO ENGLISH

I'm very sad because I realized that I still have a lot of work to do to improve my personality.

INTO JAPANESE

私は自分の性格を改善するためにまだやるべきことがたくさんあることに気付いたので、私は非常に悲しいです。

BACK INTO ENGLISH

I'm very sad because I realized that I still have a lot of work to do to improve my personality.