This quotation can be viewed in the context of a book
"People have to face regrets. Becoming mature means learning to accept what you cannot change, facing unresolved sorrows and learning to love life as it really happens, not as you would have it happen. When someone attaches unkindness to criticism, she's angry. Angry people need to criticize as an outlet for their anger. That's why you must reject unkind criticism. Unkind criticism is never part of a meaningful critique of you. Its purpose is not to teach or to help, its purpose is to punish. Life isn't supposed to be an all or nothing battle between misery and bliss. Life isn't supposed to be a battle at all. And when it comes to happiness, well, sometimes life is just okay, sometimes it's comfortable, sometimes wonderful, sometimes boring, sometimes unpleasant. When your day's not perfect, it's not a failure or a terrible loss. It's just another day."
"There are only two things to worry about, either you are healthy or you are sick. If you are healthy, then there is nothing to worry about. But if you are sick there are only two things to worry about, either you will get well or you will die. If you get well, then there is nothing to worry about. But if you die there are only two things to worry about, either you will go to heaven or to hell. If you go to heaven, then there is nothing to worry about. And if you to go hell, you'll be so darn busy shaking hands with your friends you won't have time to worry!"