Little by little does the trick. – Aesop

It can be helpful simply to make a written or mental list of the things you do each day. Then give yourself a mental credit for each of them, however small. This will help you focus on what you have done instead of what you havent gotten around to do. It may sound simplistic, but it works. – David D. Burns

Do little things now; so shall big things come to thee by and by asking to be done. – Proverb