God uses his Word, people, and circumstances to mold us. All three are indispensable for character development. God's Word provides the truth we need to grow, God's people provide the support we need to grow, and circumstances provide the environment to practice Christlikeness.
If you study and apply God's Word, connect regularly with other believers, and learn to trust God in difficult circumstances, I guarantee you will become more like Jesus.
Remember, it's all about love - loving God and loving others.