They take time to enjoy their children. Some people worry that too much positive attention will spoil children. This isn't true. Positive attention makes children want to be good. Discipline For Preschool-Aged Children Children younger than 3 do not understand rules very well.
Wise parents know that it is important to explain and enforce important rules anyway.
They also know that young children may not always follow them. At this age, children's skills at using and understanding language are better. Their ability to remember things has improved. They can understand that there are consequences for breaking rules. Still, they are not very sure of why it is important to follow rules, other than to please you.