Why Is It So Hard? Poem by Chaotic Life aka Curly Mer

I sit
Blank page in front of me
I say,
I am gonna write a happy poem today
I am gonna prove that I have fun with life
.....
I can't write anything
Can't express any happiness in a poem
Why is it so hard?
It's so easy to write when things are not right
When I'm depressed,
Disappointed, annoyed,
Heartbreaken...
Why can't I write when I'm happy
And filled with joy,
Excitement,
Love?
Why is it so hard?