Because the mind sees it in that way.
Just be. No need to do anything.
One who believes the ocean waves must be disappeared for him to be happy is unhappy because he can not get what he wants from the ocean.
One just watches the waves. The other wants all the waves disappeared from the ocean. The one who just watches the waves awakes. The other who wants the waves disappeared is trapped and unhappy.
A caged chicken who believes that the cage was built for her own happiness is frustrated with not being able to find happiness.
Like steadily focusing sunlight on a paper with a magnifying glass, steadily focus your awareness on your breath.
One who is trapped in truth. One who is liberated from truth.