Read John 15 today.

In this chapter, we read more of Jesus’ last instructions to His disciples. There may be several things Jesus said that are more difficult to understand than others, however His command to love each other seems to be very clear. It is the starting place in our relationship with each other. Unfortunately, it is easier to say and know Jesus’ command than to put it into practice.
Consider this: think of two people, one who is relatively difficult to love and another who is close to you. (Resist the urge to think of only one or more than two.) We often do not love those who are difficult to love because it takes effort on our part. Sometimes we do not love those who are close to us because we are so close we take our relationship for granted.
Spend some time in prayer, considering how you might love these two. Identify something you can do to love each of them, and begin doing it.
John 15:12-14, 17 NIV
My command is this: Love each other as I have loved you. [13] Greater love has no one than this, that he lay down his life for his friends. [14] You are my friends if you do what I command.
[17] This is my command: Love each other.