Much of our false guilt is from people who indicate their lack of satisfaction with us in some way. It is natural to feel guilty, but we need to check it our mentally every time it happens. When someone says, "Why weren't you..." or "Why didn't you..." and you immediately start to feel guilty, remind yourself that you may be dealing with false guilt.
Learning to Manage False Guilt
The first and most important step in learning to manage false guilt is to recognize it. We must develop the practice of examining our guilty feelings and determining if they are true or not. That will do more than anything else to rid your mind of false guilt, because once you know the guilt is not deserved, it's much easier to put it our of your mind.
The second step is to replace wrong thinking with right thinking. When you're dealing with false guilt, you must by choice, or by a set of your will, push that wrong thinking out of your mind. I emphasize "by a set of your will" because your feelings will take you in another direction. This is done by faith and in obedience to Scripture.
One way to do this is through praise to the Lord. Start counting your blessings. Begin thanking God for the good things in your life. Refuse to allow the thoughts of false guilt to have a place in your life.
There is No Condemnation!
I love this passage from Romans 8:33-34, from Phillips' The New Testament in Modern English