If you settle for your wildest dreams, you will be selling yourself short.
The following prayer is the third step prayer found in the Big Book and used by Bill W.:
God, I offer myself to Thee To build with me & to do with me as Thou wilt. Relieve me of the bondage of self, that I may better do Thy will. Take away my difficulties, that victory over them may bear witness to those I would help of Thy Power, Thy love & Thy way of life.
May I do Thy will always.
However, there are numerous third steps prayers used as part of the program of recovery, including those used by Dr. Bob and Clarence S. There are also third step prayers for each religion or faith. While the ones on this site show a sampling of these prayers, it is by no means exhaustive.
Here is a list of the third step prayers I have encountered over the years: Dr. Bob, Clarence S., NA, Native American, Christian, Buddhist, Wiccan, Eastern Orthodox, Jewish, Baha'i, Universalist, Catholic, Set Aside Prayer, Before Getting Out of Bed. Again, this is by no means a complete list, it is just an example of the different types of third step prayers used today.