Remember that what you decree is, and the thought you hold in the mind will be reflected through the nature of your experience. (“The Way of the Heart,” WOM, Lesson 4, Page 47)
The sentiment in the quotation is an affirmation of the law of attraction: What we decree, is. This truth lets us realize that we have to watch our thoughts, even getting out of bed in the morning. The way in which we begin our day will decide whether the day will go well or ill. Of course, we can always start the day over, as A Course in Miracles tells us. But wasting time is not to be desired (something also ACIM says).
Answer honestly, first thing in the morning, about what we want. This will put us in the right relationship to God, Who can then lead us gently to purify our thoughts.
Ask what is best that we want.
And then be assured of an Answer.