The three characteristics of existence -- impermanence, unsatisfactoriness and not-self -- summarize the state of this world as in constant dissolution. Yet, a refuge can be found in an ever-available awareness.
How being with and understanding suffering and it's causes leads to deep insights into the nature of Anicca and Anatta. Ways of working with impermanence and "non-self" in our lives and practice.
The Buddha taught that suffering arises when we want life to be different than it is. Radical acceptance cuts through grasping and aversion and reveals the freedom of our true nature.