Happiness is the greatest treasure you can have. You can be happy no matter how much money you have, what job you do or whether or not you are in a relationship.
There is always something you can do or imagine that will make you happier in the present moment. This is because joy is your natural state.
Your emotions are the fuel for your creations. If you are happy all the time, you will create more things to make you happy. If you are worried all the time, you will create things to worry about.
It is up to you, but the Angels would prefer you to choose “happy” as you can get so much more done in that state.
So don’t worry, smile and be happy. It is the most useful life skill you can have.