Shtika, a husband in that situation should immediately acquire the Garden of Peace by Rav Shalom Arush and read it from cover to cover. It is an invaluable guide, and has a lot of important things to say about divorce as well. Many, many people attest to having completely solved their (seemingly insolvable) shalom bayis problems after implementing the book’s advice. It may sound too good to be true — trust me, it’s not.
A husband can think he’s simply with the wrong wife, but then soon after he begins earnestly implementing Rav Arush’s advice, her behavior and attitude appear to completely change. Similarly, a man in that situation may divorce and re-marry, thinking at last that he’s found a suitable wife, only to discover that she acts just like his previous wife does (and now he still has to interact with the previous wife all the time as well to coordinate things and make decisions for the kids.)