Happiness is when you do all your assignment on time and submit them before the deadline.
Happiness is when your tea is freshly brewed, hot, with a nice colour and make you feel great.
Happiness is when you get an email from your pen pals who doesn't send you emails very soon.
Happiness is when you sleep enough and get up next day with smile and lots of energy.
Happiness is Iranian food when you're dying from hunger and go to Iranian restaurant in your uni.
Happiness is listening to k.d. lang's voice and discovering a new song by her and repeat it 100 times.
Happiness is when stay up and enjoy the silence of late night and the cool breeze coming from the balcony.
Happiness is studying hard in the library and managing to focus on your work without interruption.
Happiness is simple, sounds easy to get by what I wrote above but hard to achieve and harder to keep.