If you did something in 1975 that you deeply regret and that...

If you did something in 1975 that you deeply regret and that you now can recognize as having been profoundly irresponsible, for example, the only way to be lifted out of deep regret and the pain over it is through atonement - through the kind of remorse that leads to genuine atonement, the making of amends, and forgiveness of self and others.