Your desires are immense, almost infinite. Because of your desires life becomes a competition, and wherever there is competition, there is anxiety and angst; and at the end everybody is aware deep down there is death.
Meditation is just being delighted in your own presence... where you are not doing anything. The moment doing enters, you become tense; anxiety enters immediately. How to do? What to do? How to succeed? How not to fail? You have already moved into the future.
Anxiety comes into existence only when we become identified with small things. And they all pass.
Hence the tension, the anxiety, the anguish of humanity. The more you fight with death, the more anxiety-ridden you will become, you are bound to become. That's a natural consequence of it.