How can I find happiness?

I know that I am very fortunate to have the things that I have in life. There are very many people that dreamed they had some of the things I have. I have a beautiful baby girl, a wonderful husband. We are all in fairly decent health. We are okay financially. My husband works out of town for about 7 straight months out of the year. Our daughter and I stay with my husband in corporate housing suites most of that time. We are about 6 hours from home. I feel so isolated most days because my husband works so much and I don't have many conversations with adults. I do not want my husband to quit his job because I know he enjoys it and the benefits are great but I just think it is taking it's toll on me emotionally. I am not a very outgoing person and the more I isolate myself from the outside world the more unhappy I become. I don't even know if I suffer from depression because sometimes I feel like I am just sabotaging myself. I feel like I always look for the negative with everything. I don't know why I do it. It's like I have no control. How can I start to change my way of thinking so I can think more positively? Please don't tell me to just do it because it's not that easy. I need some sort of inspiration. Thanks!