"I could not image what it must be like to have to someday confess my sins to God."
Why wait till "someday", what's preventing you from doing so now?
What I was attempting to explain is that to sit down and tell the priest the sins I have committed is a very difficult task. As difficult as it is, can you image what it is going to be like on the final judgment when you have to tell those sins to God.
In my case at least it is an incentive to try harder not to commit those sins again.