1. You Don't Need A Dad To Say "I'm proud of you."
You don't need validation from someone to know what you are doing is right. As long as you are proud of yourself, that's all that matters. As long as you have people around you that love you and support you, nothing he could do would change your mindset of yourself.
2. Keep A Journal
You might not want to now, but every time you think about him or just having a bad day, write to him. "Dear Dad" are a way to speak to him without having to do it in person. And after a little bit you might want to send them.
3. Money Doesn't Talk
Don't be the child who just wants his money. He may have it, but it never fixes anything. The one thing you will want to look back on is the fact you made it through the thick and thin without him. You'll be proud of yourself for that.
4. Don't Give Up On Your Your Hopes
If your still in high school and play sports, don't tell yourself he'll come. It'll make you feel a whole lot worse. The whole game will be about him and not you. If he wanted to see you play he would've come. And if he did come he would always leave right after the game and not say hi.
5. As You Grow Older Things Change
You start realizing what the good things about him not being there was. Noting at what you could have changed or done differently. No one is perfect. Don't beat yourself up about it. All you can do is change the present and make yourself into a better person.
Not having a father figure is hard. I've been going through it for about 7 years. When you get older you look back and realize things you never thought of before. The one thing that I never got over with until recently, when I thought the problem between the two of us is my fault. It's not. If you are in the same boat, don't sweat it. Everything falls in place at some point.