
Think of the stereotypical spoiled child, what happens when they don't get what they want? They scream and cry and generally make things very difficult for their parents until their parents cave in. It's a form of manipulation, they hold peace and quiet hostage until they get their way. If their desires aren't fulfilled, they're going to make everyone else miserable too. Of course, you can't blame the child too much, because in most cases the parents were foolish enough to start rewarding this type of behavior.
Your mind is that spoiled child, even if you don't behave that way outwardly. Your mind holds your happiness hostage and demands that its desires be fulfilled if you want any of that happiness. Your mind throws hissy fits just as obnoxious as any child when it doesn't get what it wants, but for the most part these stay hidden within so you can at least keep up the appearance of maturity.
When you fail to get what you desire, you suffer for it. Even though Peace is inherent to your Being, your mind screams and rants and repeats and repeats and repeats and repeats and repeats... Every time you cave in to the demands of the mind, you strengthen these patterns too. Your Perfect Consciousness is still there, it just becomes obscured by all the mind's chaos. Surrounded by illusion, Peace seems like something far away, while confusion, anxiety and suffering almost seem normal.
It's usually in early childhood that the desires of the mind eclipse the Joy of Being. Your life is no longer about Living, you become consumed by desire. Your happiness becomes a carrot on a stick that's controlled by the mind, and even though every once in a while you get a little nibble, your mind can create new desires a thousand times faster than you can fulfill them.