He that spareth his rod hateth his son: but he that loveth him chasteneth him betimes.
There are some people who believe that it is better to be their child's friend than to always be disciplining him. Scripture tells us the opposite--you show love when you discipline!
When you discipline, you are teaching your child you care more about their future than if they like you in the present. You want them to become a man (or woman) of God and follow His commandments. Discipline isn't always easy and is never fun, but it is imperative to correct a child now before something becomes a habit or he becomes insensitive to it.
Show your child love by chastening him!