You think you have only one life because you are prejudiced, you are conditioned.
The Christian idea of a single life, the Jewish, Muslim ideas, all of them based on the Jewish concept that a person is given only one life, led to the fact that the West was seized by the need for speed. Everything around is done with such haste that a person simply does not have time to enjoy the work done, he is not able to fully devote himself to one thing: after somehow finishing one job, he in a hurry takes on another.
Western man lives by erroneous notions. This created great anxiety in the minds of people: they are in constant tension, they are constantly in a hurry, they are constantly worried that death can overtake them at any moment. Everyone strives to achieve the maximum possible in life. But this leads to the opposite effect; people cannot do anything well, beautifully; they can't perfect anything.
Their life is so burdened with the fear of death that they are unable to enjoy it. Anything that brings pleasure is considered just a waste of time.