Learn to accept your limits and you'll become a happier person.
Don't apologize for what you think you did wrong. Apologize for what they think you did wrong.
Guilt serves a powerful social function in terms of policing our behavior.
Forgiving yourself, not guilt, increases personal accountability.
Can you predict the future with absolute certainty? Your answer must be no. You have two options: You can either decide to accept yourself as an imperfect human being with limited knowledge and realize that you will at times make mistakes, or you can hate yourself for it.
Negative thinking patterns can be immensely deceptive and persuasive, and change is rarely easy. But with patience and persistence, I believe that nearly all individuals suffering from depression can improve and experience a sense of joy and self-esteem once again.