Unity cannot be forced. Unity and conformity are not the same.
Colossians 3:14 says that "Love is the perfect bond of unity."
The only way to unity is through the love of God.
1 John 4:10-11 says, "This is love: not that we loved God, but that he loved us and sent his Son as an atoning sacrifice for our sins. Dear friends, since God loved us that much, we surely ought to love one another."
Unity comes from realizing how much God loves us then loving others because of His love for us and His love them.
1 Corinthians 13:2 says, "Without love we are nothing"
You simply need to learn more and more how much God loves you and His great love will lead you to love Him and others in freer ways than you ever thought possible.