Definitely! Admitting you've hurt someone or that you were wrong for whatever reason can be such a healing thing. Forgive yourself, even if you're not immediately forgiven by others. And be sure to make these "amends" while you can -- having lost my younger brother a few years ago without letting him know I had come to realize how I had mistreated him... the guilt and hopeless feeling -- when it is too late -- just feeds depression or whatever crap you're trying to heal in yourself. Do it because you mean it and you would like the other to know... but also because it is good for you.