Cetelia and I routinely talk with couples who are at their wit's end in their marriage. In fact, just last week a husband called me and told me he plans on leaving his wife. Why? Because she's not changing and can't change. In essence, he has given up hope that anything will ever be different.
Although it's easy to get on the "things are terrible and will never get better" bandwagon, there is something special about the people who will look at an impossible situation, and steadfastly believe that impossible simply means it hasn't happened...yet.
If you've been in a state of disbelief & discontentment for some time, you will certainly want to encourage your faith through God's word.
Think about how he gave children to Abraham & Sarah, Hannah, and the Shunammite woman after years of barrenness. Think about how Jesus healed the disabled man who hadn't walked in 38 years. Consider someone you know personally who was in really dark place in their marriage, but has seen things become increasingly better.
If you'll think on these "impossible" situations, you'll find yourself getting stronger and not giving up hope.
Make the words of the psalmist yours today: I believe that I will see the goodness of the LORD in this world of the living. Wait with hope for the LORD. Be strong, and let your heart be courageous. Yes, wait with hope for the LORD. (Psalm 27:13-14)
Until tomorrow, don't give up hope.