Keep on reminding yourself. Human mind tends to forget with in 48 hours, that which is not reminded. You would have to condition yourself. Repeat to yourself who you are. Write that to yourself. Rewrite. Write your goals. Write your ambitions. Write to tell yourself that you are not going to let go efforts of the universe and god go waste on you. Write to tell yourself.
Tell yourself to write. Repeat with belief. Believe with repetition.