Novelty, variety and surprise can prevent or slow down adaptation. So, with relationships, let’s say you get married and you get a happiness boost. Studies show that it takes about two years for people’s happiness levels to go back to what they were before the wedding. That doesn’t mean that you’re not happy with your marriage, but we get used to it to some extent. So we want to introduce some variety and novelty and surprise to the marriage in a positive way. Don’t watch Netflix every Friday night; mix it up. Do different things with your partner. The kind of things that can lead to more surprises, again in a positive way. Same thing with a job. Open yourself up to new opportunities, challenges, taking risks, learning new things, and meeting new people.