I agree that music is a powerful one that gives you that happy mood. I never miss out on a day without listening to music because I always want to stay happy and not have a squeezed face or bad thoughts in my mind. Also, being grateful and appreciating God is another happiness which I love doing each day.
I find peace in doing these and many more things that guarantee happiness to me and I have always stayed positive too.
I'm glad to see you share some of these habits. We should always stay positive as you say, so positive things may come. Thanks for reading me