Do you focus on what you don't have or all the small things that bring you happiness?  If we are continually dissatisfied with our lot it can have an impact on our mental and physical health.  You can find out how in this article.

Many people only start to become conscious about their relationship when things go wrong.  It's hard to move on from toxicity in a relationship.  Better to avoid the pitfalls up front.  

Just about everyone knows how to promote good physical wellbeing.  What most people don't know is that we can do much to promote good mental wellbeing too.  When we are mentally and emotionally stable we have the spare capacity to be resilient when things aren't going well.