My husband appears to be smitten...?

There's a lady my husband works with who seems to have sparked his interest. He's not physically cheating, but he is admiring her in a lot of ways. I am really bummed out about it. We have only been married 2 years, I have 3 kids and am working my way through college with only one more year to go. I don't make much money, but I do the best I can with what I have. When I finish college I will earn a lot more. Lately, he is obsessed with how much money we have, finishing his degree to get his masters (like this woman he works with has). He sings her praises all the time. She is married and is involved in all kinds of humanitarian efforts in the area, and I cannot compete with that. I feel like he is working with such a successful person and then is let down when he has to come home to me, who has accomplished so little. How do I get past this?