There are so many things that can be unpredictable and out of your control when it comes to relationships. After all, emotions often aren't rational or logical. And because so much can sometimes seem up in the air, it sort of makes sense that humans would want to find ways to "solve" or explain relationships in a more orderly, scientific manner. There's tons of research about how to best communicate with a partner, how to attract someone, and the things that can make or break relationships, but the unexpected habits you need to cultivate a successful relationship, according to science, can add a little bit more certainty to something that's often uncertain. These are things that you can actually do that science says might help give you a little peace of mind and maybe make your relationship a bit more successful.
You already knew that your personality traits, likes, dislikes, communication skills, and more all can play a very central role in determining whether or not your relationship is ultimately successful, but intentionally cultivating certain habits might also help make a difference. From investing in your friendships to fighting earlier on in the relationship, being more mindful of these sorts of things might, science says, help your relationship go the distance.