The important person in your life

The professor speaks to the students:"Let's play games.Who is willing to help me
?"One female student comes to him. The professor says:"Please write down 20 persons you love the most." She writes down her neighbors,friends,co-workers,families.

The professor says :"Please cross out the one you feel not important." She crosses out her neighbor. The professor says:" Please cross out another one." She crosses out her co-worker. Untill only 3 people's name are on the black board--her parent,husband,son.

The classroom is so quiet. Everyone looks each other. The professor says with calm:"Please cross out one more." The student with hesitation crosses out her parent's name.
"Cross out another one." the professor says. She crosses out her son's name,then she cries out loud for a period of time.

After she calms down, the professor wants her to explain about her decision.
She says:"When the time passes by,my parents will pass away before me. When My son
grow up, he will leave me alone for sure. Only my husband will stay with me till the end."

When you are with your families,you enjoy the present moment with them. We do not need to choose one of three or two of three.