Use your imagination and consider what it will be like the moment after your death, even when your body is still warm.
It's the inevitable time when, ready or not, things get real -- when you know exactly what's up.
See yourself approaching your ultimate "Come to Jesus Moment," which is to say, your personal judgment.
Will you wish your priorities had been different, even moments before, while you were still breathing? Will you wish for a do-over?
At that point, there are no do-overs. No second chances. Hard stop.
Your do-overs and second chances are graciously given to you now, in this life. Make use of them, and don't turn back, because you never know when you'll get your toe tag.
Repent of sin and be baptized. Look to Jesus and follow where he leads. Not only can you avoid an unbearable eternity of regret and misery, but you can enjoy the free gift of peace and love and joy with your God and Father forever.