Without practice or mind training, we cannot be sure of attaining liberation. For instance, over the several decades in our lifetime, we do not in general have to worry about our livelihood; as long as we are willing to work, it is more or less guaranteed. However, death, this uninvited guest, comes when we least expect it. At the critical moment, we are not at all prepared to confront death or transform it into the path. Invariably, we are helpless when death arrives, so the question of birth, aging, illness, and death is a more important one than existence. If we cannot address this problem properly, it is more frightening than the struggle to stay alive; if we can come to terms with the problem in the correct way, it will be more meaningful than solving our livelihood. Therefore, practice is extremely important.
~Depicted from THE FOUR SEALS OF DHARMA - The Importance of Practice