What goes around comes around.
Slow obedience is no obedience.
Stupid is as stupid does. from Forest Gump movie
I find myself also saying, "It is what it is." Kind of on the same note, when we started our little quilting bee all of us were beginner quilters. Often when we worked on something the project would not be perfect. We would tell each other, "So be it." when it was time to find a name for our group we became the Sew Bee Its.