Remember when we were kids, and we would go to a friends house or school to play. If they had a toy we wanted we would get very upset if they wouldn't share. If you don't remember, then perhaps its time to spend some time in the church nursery, and observe the behavior of children.
The real problem is that we do not outgrow such behavior very well. Many adults are still trying to learn to "play well together". I was reminded of this recently in looking at the account of the disciples arguing over who would be the greatest in the Kingdom of Heaven. Isn't that just like us, to argue over who gets the best, the most, or our way. Maybe we never learned to play with others in the fun things of life, so it hurts us in working with others in the hard things.
One nice things about children, is that they often forget in a short while why they were angry with another child. A new toy or new interest comes and they are off with life. The problem with adults is that we are locked on the problem, and life can't move on for us. We become consumed with the situation, instead of loving the people God has blessed us with in our lives.
May you put aside your differences in life. May you play and have fun with the people you are a part of. May those blessings encourage love, as God intends it with in His family.
Keep on your Journey with Jesus today.