There's a great difference between being happy and cheerful and being really happy. Lol. The kind of happiness you feel that stirs from the inside and made you smile and dance even when the music don't have a jamming beat is what being really happy is all about. You're not happy because you want to show those around that you're cheerful, you're happy because you're truly happy. Such type of happiness is hard to explain and you just don't want it to go away. I truly understand such feeling and your word construction is very great. I hail!