I'm not really afraid of forgetting any memories of my parents but, I do wish Ihad spent more time with them and listened when they wanted to teach me things. Because I didn't listen as much when I should have I am now having to learn the hard way. I'm sorry that this is happening to you. Maybe you should write down your happy memories of your dad so, That you can reread them when you feel this way to help you to remember him better.