Buddhism is a philosophy and practice for seeing the world accurately. To notice the true nature of reality:
Non-Self: Your consciousness is not a CEO in your brain but more like the PR department. There is no atemporal you that is in control. The self is an illusion.
You can end suffering (dukka) by avoiding tahna: craving for the pleasant, avoidance of pain, and the tendency for delusion.
Impermanence: Nothing lasts forever! Therefore, nothing can be grasped or held on to.