As we take a look at Jesus' conversation with His disciples in John 15, we can take note of the importance of bearing Godly fruit. What is so amazing and beautiful to me is the fact that God will not force Himself in our lives. We have to make a decision to allow Him to live within us and trust in His works of changing our inner nature, by way of the Holy Spirit. How can we say we are followers of Christ and seek to walk as He did, if we don't exhibit characteristics that He has? In our walk with Christ, He prunes (cleanses) us of any and every thing that is not like Him.
Whether it is a thought, habit, or even, in some instances, a close friend/relative. If this part of us is not producing fruits of the Spirit such as patience, self-control, or joy, God cuts that off. Now, the decision to let go may be uncomfortable because we tend to trust our own understanding and ourselves, but He fills that void with fresh life, better than it was before.
Look at this in relation to a fruit tree. A fruit tree is pruned to remove dead/damaged parts to grow fuller and faster, and shaped into a perfect design. God does the same with us as His children. He removes every part of our lives that is not producing characteristics that resemble Him, as long as we allow Him to. We are in this world to produce not just any fruit, but His fruit, which will not spoil but last forever.
God transforms us from the inside out. God is love, right? Therefore, love-Agape Love, transforms us from the inside out.