How can I always pretend?

Sometimes I feel down
Sometimes I feel suffer
Sometimes I feel broke
Sometimes I feel sad
Sometimes I feel confused
Sometimes I feel hurt
Sometimes I feel sick

But, sometimes I feel happy
Sometimes I feel glad
Sometimes I feel cheerful
Sometimes I feel I must accept the others
Sometimes I feel higher spirit
Sometimes I feel I must struggle

But, sometimes I feel angry
Sometimes I feel dissapointed
Sometimes I feel bad
Sometimes I lonely
Sometimes I feel misery

Many expression which I appear in my face, but not at all
If I angry, dissapointed, bad, lonely, misery, suffer, sad, confused, broke, sick, hurt, and down
I must pretend happy, glad, cheerful, having higher spirit, must struggle
The world cant wait me to realize my sadness, I always pretend keep happy

"If I wear a mask, I cant fool the world, but I can not fool my heart"

But it's doesnt matter ..