Hey,
I like this topic, It's a great question. But essentially what is happiness? I think you can be happy when you go beyond being sad over something or being happy about something else. To make it more clearer, if you quit being happy for the usual reasons and be sincere with yourself and know yourself better you could live a better life. For example I'm not happy if I have lots of money to spend, but society teaches us that it's a good reason to smile...not for me, I'm not happy when a criminal is caught I'm sad that he exists...
I consider happiness like beauty...It's in the eye of the beholder. I like to laugh as much as I can, and I never went to bed without laughing at least 3 time in one day so, am I happy? Perhaps, or it's just easier to get over things...I feel good that's what counts, it's hard to be truly happy I'm not wise enough to comprehend what true happiness is...But to answer your question:
1.Had my first kiss and fell in love.
2.A few Christmas gifts in different years.
3.Found a beautiful girl and I'm still in love with her.
Peace