Past cannot be changed, no point in crying about it. Stop trying to fix it...

Past cannot be changed, no point in crying about it. Stop trying to fix it. Rather focus on your future, look for the available opportunities around to make a difference in someone's life and yours as well, by getting involved in their lives; make it so awesome; so that you and others, may not remember your past. 

Never repeat same mistakes...

Past taught us a lot, keep that in mind, never repeat the same mistakes again; like apologizing and doing the same thing again.

Past cannot be changed but of course your present and Future can be... So stop wasting your: energy, efforts, time trying to change your past, which indeed cannot be; rather invest them against your future, beautify it from now on....