We know from our memory that we have done something specific. But our mind, pride & ego says we didn’t, until eventually our memory on the matter yields & we forget about it. This means that when we are haunted by certain memories & thoughts, all it takes is 2 willfully deny the root cause of those memories & they will disappear from our consciousness, they will be hidden in our subconsciousness. This is like conveniently suppressing memories.
Nevertheless, one should never lose the faculty of mindfulness 4 it’s very important 2 regret the negative actions that we have committed in the past & 2 develop a strong resolve never 2 indulge in them again.