How do you know what you really want?

I have been thinking and I’m wondering what it is I really want? I use to think I wanted to be married have 2.5 children and a dog. I thought I wanted a steady job with good pay. I thought having toys would fulfill me. I thought having money in the bank with a good retirement plan would bring me satisfaction. Well I have all of these things and I’m still not happy. So what brings happiness to a person or at least to me. This is a question I very much want an answer too, because I want to be happy. I’m not saying I don’t love my wife and children I really love them but I wonder are they happy with their lives. I think it’s important to find happiness, I feel the most happiness when I’m in nature thinking and admiring the beauty of all living things. Do you know what you want?