The truth is that you will never be absolutely safe. All things change constantly, even what is most precious. You know that you and those you love will die, but not when or how. This is the angst of life, the price of being a conscious human being. It is not a flaw, although many people cannot let loose of seeing it in such a manner. It is just the way life is constructed. When your awareness of this vulnerability is triggered, you can be swept into panic, collapse into depression, or desperately try to distract yourself. One of the values of  practice is that you are able to come to terms with this anxiety in a conscious manner. Your life becomes more integrated because you are no longer trying to deny or avoid what is true.

For instance, you simply forget a meeting, yet you are traumatized, certain that you are losing your ability to focus. Or someone disappoints you and you collapse into complete self-hatred, fearing that you have no worth to the other. With mindfulness practice, you learn to see how the untrained mind is agitated by the human condition and how not to allow this general anxiety to fuel your fear in a specific situation. You also gain tolerance for the unpleasantness of uncertainty and also the naturalness of your own imperfection. You have confidence that “life is like this.” You cannot and are not supposed to miraculously fix it; rather, you gain the insight that happiness and peace come from relating to life just as it is.

Phiilipp Moffit, Freedom from Fear