When a friend betrays you, you are crushed and completely devastated. When you are hit by a setback, you decidedly quit altogether. And that s it. End of the world. But look again.
Life goes on.
No one can relive it. No one can get it back. As much as the happiness and the triumphs of the past are gone, so are the failures and the pain. All behind us. If you will choose to dwell on the pain and insist on nursing your depression, you will waste your present and destroy all chances of building a better future.