You experience an existential crisis and question "what's life for?"
Some people succeed in living in a relatively detached way, mechanically and routinely moving along life. Others, however, desperately need to feel that they are indeed alive. For them life is inherently anxiety-provoking and they often struggle with the "Big Questions": What is life for? What is life about? How do I make something of it?
The intense search for meaning, for making something out of nothing, is often called an existential crisis. Experiencing an existential crisis means ruminating over the fact that life is inherently pointless, that our existence has no meaning beyond the meaning we give it, that we have the full freedom to be (or not to be) and this makes us ultimately and solely responsible for what we make out of life.
Existential crises are indicative of a certain level of awareness in a person. The psychologist will use this awareness, and encourage the client to follow it, until it brings them answers about their authentic way of living.