1 Peter 4:1-2
Forasmuch then as Christ hath suffered for us in the flesh, arm yourselves likewise with the same mind: for he that hath suffered in the flesh hath ceased from sin; That he no longer should live the rest of his time in the flesh to the lusts of men, but to the will of God.

Regret can sometimes be such an easy thing to carry.  It’s got some weight to it, but we carry it around for so long that we get used to that extra heft in our pocket until it becomes such a normal part of us.  But we don’t have to carry that around all the time.  Christ has set us free from every mistake, every sin, everything we are judging ourselves so harshly for.  He took those things from us.  He dealt with them and defeated them.  And we can’t do anything more about them.  There’s no going back and changing the past, but we can use the rest of our time wisely, seeking God and His will.

We have a chance to be changed.  We once followed those ways of sin, but now, with Christ, we can follow the ways of God.  We once lived only for ourselves, but now we can live for Jesus, who gave His life for us.  We once sought to satisfy our every desire, but now we seek Christ and the satisfaction that He gives to us.  We reveled in the darkness, but now we dwell in the light.  We used to promote the work of the devil, but now we are ambassadors for Christ.

So then if we’ve made that commitment, if we’ve accepted Jesus as our Savior, then let’s go ahead and actually live for Him.  Let’s make that the purpose and the focus of our lives.  Let’s walk near to Him and respond to Him and labor for Him.  Let’s be obedient to His commands and share His love with those around us.  Let’s minister with kindness and compassion.  Let’s be generous and unselfish.  Let’s deny ourselves but be sure to never deny Him.  And let’s cease from bowing to sin in any way and surrender instead our all to Jesus.

We can’t change our past, but we can do something about the time we have left on this Earth.  We can’t undo mistakes we’ve made, but we can make better choices going forward.  We all have that old version of ourselves that we used to be, but Jesus makes us new.  Those old things have passed away.  Those sins are gone.  And now we are free to serve God, to accomplish His will for our lives and spend the rest of our days in sweet fellowship with our Lord.