Yes, absolutely. This morning, sitting in the surprisingly balmy autumn sun in the garden with the weekend newspaper and a coffee - pure happiness. Having a toast with Nutella later for dinner - made me very happy. Discovering a new piece of music: happy. These are moments of happiness. Life is a string of moments.
Happiness is something that occurs in moments. Certainly there is no everlasting, constant happiness, though. In that sense, the modern hunt for happiness is completely misguided and - I firmly believe - a big reason for many people actually being unhappy. Because there is the promise that you only have to chase after happiness long and hard enough and you will find it. But that is unattainable.