You can set the positive tone of your entire day by thinking about all the things you have to be grateful for. Practicing gratefulness makes you focus on all the good and pleasant things in your life and that, in turn, improves your overall happiness.
So spending a few minutes first thing in the morning thinking about what you are grateful for can improve your mood and your feeling of being happy for the entire day. That’s something well worth perusing and you don’t have to spend a lot of time on it.