There are a lot of things you know. But do you know your true self? You are not the bubble of your mind and feelings. You are not defined by anything you dream or imagine. You are not defined by your projections.
Suffering is your lighthouse. It advises you that you have given reality to the illusion.
Like on a long road trip, a bump in the road addresses your torpor, suffering calls you to wake up from mistaking the unreal to be real.
Contemplate the formless reality of being. The transparency of awareness.