In the same way we create karma in the good we do for others, I agree with Voltaire that we also create karma for our lack of doing good when faced with opportunities to do so.
We may not always realize the potential or opportunity for doing good until after the fact and Captain hindsight realizes the missed opportunity for doing good.
When this occurs we shouldn’t beat ourselves up if we haven’t intentionally chosen to ignore the opportunity I don’t think we can be held accountable.
When awareness of the blunder provides us insight, we will be held accountable for using our foresight to identify future good we can do in the same or similar circumstances.
Each day is a new opportunity to do good which helps make up for missed chances from yesterday.