Because...

I'm happy.

I'm happy because it's cloudy and windy. Because rain is coming.
I'm happy because I'll see my Best Friend soon. Because it's her birthday.
I'm happy because of the music I'm listening to. Because it's piano and it's beautiful.
I'm happy because I got up on time today. Because I did my workout.
I'm happy because life is good. Because Spring is here.
I'm happy because of my drawing. Because it's pretty.
I'm happy because of coffee. Because it's caramel macchiato.
I'm happy because I just heard thunder. Because it's awesome.

I'm happy.

......because.