Eckhart Tolle examines how the phrase "my life" creates a false separation between self and existence. Saying "my life" implies you own something distinct from yourself, which breeds fear of loss. In reality, there is no separation: you are life itself, not its owner.
Chapters
You do not have a life, because that's— people say, 'My life.' Now, if you look at the structure of that sentence, 'my life,' there's a duality there, because if you say 'my life,' that implies that you have it. It's mine. So it implies two— duality. You say, 'My life'—there's you and the life that you have. It belongs to me, it's mine. So this thought, this language creates a duality in your mind. Call it 'my life.' That's interesting. So there's me and I have a life, and then the fear comes in: if I have a life, I might lose it. Not realizing you are trapped in certain mental formations that create an illusory identity and actually create delusion. You don't have a life because there is not a duality. Without life, there's no you, so you can't have it. You are one with life.