There’s some good stuff on this link for those considering divorce. Some power is missing in it though. It’s the Gospel. The reason we stay together in marriage is because of Jesus. Jesus stuck it out for us. We can stick it out for him. When we give up hope, we also sacrifice our ultimate joy. Enduring all trouble for Jesus is worth it even though it may feel like a nightmare at the time.
Check out the link if you need some study-based motivation on how traumatic divorce really is, but also how beneficial it is when we stay together.