Life seldom judges right, or wrong, but its more how we react to what life throws at us, and the feelings that get brought to the surface, and stirred around. No one can predict the outcome of their actions, or the actions of others, all we can do is cope with the experience, learn, and try to do better next time.
Sounds like you are becoming a victim of your own fear, or guilt, and hopefully you can overcome it to grow and live through this experience. Its not easy, and it takes time. Eventually you will be able to take risks again, instead of being afraid to take a chance.