Prevent Regrets Through By Following Chrst

Many of the deepest regrets of tomorrow can be prevented by following the Savior today. If we have sinned or made mistakes—if we have made choices that we now regret—there is the precious gift of Christ’s Atonement, through which we can be forgiven. We cannot go back in time and change the past, but we can repent. The Savior can wipe away our tears of regret and remove the burden of our sins.  His Atonement allows us to leave the past behind and move forward with clean hands, a pure heart, and a determination to do better and especially to become better. 

President Dieter F. Uchtdorf - October 2012 General Conference "Of Regrets and Resolutions"
https://www.lds.org/general-conference/2012/10/of-regrets-and-resolutions?lang=eng