"For the natural man is an enemy to God, and has been from the fall of Adam, and will be, forever and ever, unless he yields to the enticings of the Holy Spirit, and putteth off the natural man and becometh a saint through the atonement of Christ the Lord, and becometh as a child, submissive, meek, humble, patient, full of love, willing to submit to all things which the Lord seeth fit to inflict upon him, even as a child doth submit to his father."
Mosiah 3:19
That is how I feel about anyone trying to become a good person.
We are all trying (at least most people), and as long as we have good intentions, and follow the commandments, then we are a good person.
Am I a good person? I believe so, but I am not perfect, nobody can be. I am trying, and I definitely have my shortcomings, but the more I work on them, the better a person I will become.
Oh, and I know a lot of good people, but I know no perfect people.