If you're unhappy in a relationship and thinking of ending it, there's one thing you should try first.
A new study by Maranges and McNulty investigated the effects of sleep deprivation on romantic relationships. Their findings indicated that people who slept more reported more satisfaction in their relationships than those who got less sleep.
While this might sound like common sense, it's worth considering that your unhappiness in a relationship (or in life in general) might be triggered by extraneous factors, like sleep deprivation.
Before making a dramatic life change, you should look into adjusting your sleep habits. It just might make a difference.