If two people work together and both have successful business titles does it guarantee a strong marriage?

There is no such thing as a guaranteed marriage. We all have to work together with our spouse and communicate well and hope for the best. People can go through different mood changes in their lives and usually it's 40+ for both men and women where they will begin to realize they are closer to older than younger, and may start to feel insecure about their physical looks, their ambitions in life and sometimes a feeling they haven't done the best they could. It's just simply a balance. If you both get along well, can communicate and discuss business ideas without arguing, yet put SOME FUN into your relationship there is absolutely no reason why you wouldn't have a higher percentage of making your relationship work. Don't be afraid of stopping and smelling the flowers. All work and no play isn't good! Marcy