Hmmm…. Interesting question. Can you answer right now? Probably not, or you will give some answers like: driving a strong car, eating a chocolate and so on. Yes these things are probably making you feel good; but not happy.
Try to remember one of those moments when you were feeling that you are flying and everyone around was observing your happiness. What was it that was making you feel like this? For me, there are two situations when I arrive to this kind of spiritual wellness: achieving a result for which I was struggling a lot, investing a lot of effort to arrive to the proposed result and this was a highly wanted objective; helping others, making a positive impact on someone else.
The second option for me is the one we should practice and the one could change the world in better. It is good for you and it is good for the ones you are helping. One of my favorite quotes is the one of Matahma Ghandi: “Eye for an eye will make the world blind”.
But what if we change it in the positive sense: “Smile for a smile will make the world laughing”.
Give it a try. It cost you nothing and will change the world in better.