"Little children, let no one deceive you" (1 John 3:7).
Seven times in his first epistle, the apostle John uses the term of endearment "little children." He was probably in his eighties when he wrote 1 John. He was a true spiritual father to the Christians in Asia Minor, and he IS the same to us.
You will find "little children" in 2:1, 2:12, 2:28, 3:7, 3:18, 4:4, and 5:21.
One of the reasons John uses the term is that someone else once called him, along with ten other men, "little children." See John 13:33.
John knew the love that Christ had for him. And that love couldn't help but turn into a love for others. In John's case, it was a pastoral love for the members of the church.
Step one is to know the love that Christ has for you. Step two is to let that love turn into a love for others in your life. Who will it be? You will know.