Attachment vs. Love

Sri Swami Satchidananda's words of wisdom this week touched on understanding attachment to help one understand cause of unhappiness:

“How can you maintain your happiness always? Ask yourself why you are unhappy. Every time you are unhappy over something, the first thing to do is to analyze the cause. You will always find there is attachment in some area. If you don’t want to be unhappy, you will come to the conclusion, ‘Oh, I should not be attached to that. When I am attached, I feel unhappy.’ You may ask, ‘But what about people?’ You can be friendly, you can love them, but you should not be attached to them. There is a difference between attachment and love. Love means that I must think of your benefit first. Attachment means I think of my benefit first."

I thought about this, and I recognize the connection of attachment to things and unhappiness. And I see how attachment to a person can cause unhappiness. But I'm not sure about the explanation of love versus attachment.

My son does not listen sometimes. It makes me unhappy when he does this--frustrated. But I love him. I am not frustrated because I am thinking about my benefit first, I am frustrated because I am thinking about his. I feel more unhappiness with people I love than with people I do not love because I care more about their health and well-being first.