A Lesson in the Making

I believe one of Satan's most effective tools to disable The Body is guilt. So frequently I hear people (mom's mostly) mention at some point in the conversation how they're feeling guilty about something. I did a very quick word search in my Bible today of the word 'guilt' and skimmed over every passage that uses that word and my general feeling after I was done was that the guilt of the Bible is not the guilt that people feel when they say things like, "I feel so guilty because I took a shower while my baby sat in the crib and cried." What I gathered, and this is largely the reason why I want to dig in deeper and read more about the topic of guilt, is that the guilt in the Bible is a result of sin. And the guilt one might feel for leaving a crying baby in a crib is not so much guilt as it is a feeling of remorse. BUT, like I said, the search I did on this was very quick and I'm excited to find out more.
Here's what I know, and please correct me if I'm wrong or add to what I'm saying: Guilt has a job; to convict us of sin, and once that job is done - the conviction has been recognized and repentance has occurred - the guilt must leave. There is no room for it in the heart that belongs to the Lord. I think that's when the enemy swoops in and temps us to allow the guilt to linger well past it's appointed time.
Oh there is so much to learn about this! I'd really like to study this further in the Bible. If anyone has any great references or commentaries for me send me their names. I'd love to hear feedback... where do I take my search? Are there specific things that you seem to constantly feel guilt about? I think the topic is entirely relevant and guilt is robing loads of people everyday from the blessings the Lord has for them. Like I said though, I have a lot to learn about this...