It is said that the last few minuites before you got to sleep are carried across to the next day, also said the firat 8 minuites after you wake up set the mood for your day. Word is bond so to manifest a positive future, affirming things in your mind is a great tool.
Affirmations can be used in meditation, or just be said over and over, I am and what ever you put after is up to you. www.tranquilmindaffirmations.com is a place to start.
Peace.