There has never lived a man so good as Jesus Christ. As you get to know what he did and how he did it in his life, you will find that any other "good" person pales in comparison. The first step is believing that it is possible that God knows much more about being a good person than you do. The key to being shown just how good he is lies in remembering the limitations of your own goodness:
41 O then, my beloved brethren, come unto the Lord, the Holy One. Remember that his paths are righteous....
42 And whoso knocketh, to him will he open; and the wise, and the learned, and they that are rich, who are puffed up because of their learning, and their wisdom, and their riches—yea, they are they whom he despiseth; and save they shall cast these things away, and consider themselves fools before God, and come down in the depths of humility, he will not open unto them.
43 But the things of the wise and the prudent shall be hid from them forever—yea, that happiness which is prepared for the saints. (2 Nephi 9)
Those who recognize that God possesses all truth will humble themselves before him. They will “...come with full purpose of heart, and cleave unto God as he cleaveth unto you.” (Jacob 6:5) They have the opportunity to agree to seek after and follow new truth as God reveals it to them in their lives, either directly through revelation or his written word, or indirectly through the experiences they observe.
Yea, I say unto you come and fear not, and lay aside every sin, which easily doth beset you, which doth bind you down to destruction, yea, come and go forth, and show unto your God that ye are willing to repent of your sins and enter into a covenant with him to keep his commandments, and witness it unto him this day by going into the waters of baptism. (Alma 7:15)
This agreement occurs in the covenant of baptism, and allows the Lord to pour out his spirit more abundantly upon you, resulting in greater access to positive change in your life.
Now I say unto you, if this be the desire of your hearts, what have you against being baptized in the name of the Lord, as a witness before him that ye have entered into a covenant with him, that ye will serve him and keep his commandments, that he may pour out his Spirit more abundantly upon you? (Mosiah 18:10)
At this point, you will experience the baptism of fire, which will change your heart and provide you a greater capacity to do good, recognize truth, and be a better person. You will receive increased connection to God through his spirit.
And ye shall offer for a sacrifice unto me a broken heart and a contrite spirit. And whoso cometh unto me with a broken heart and a contrite spirit, him will I baptize with fire and with the Holy Ghost... (3 Nephi 9:20)
You will find that God will “pour out his Spirit upon [you]...because of [your] easiness and willingness to believe in his words.” (Helaman 6:36) Then, “...by every word which proceeded forth out of the mouth of God, [you will] exercise faith in Christ; and thus by faith...lay hold upon every good thing...” (Moroni 7:25)