Am i making the right choice?

I'm 17 & my dad got remarried. I haven't talked to my dad for a year because of his wife. I'm extremely jealous & hurt because my dad picked her over me. I'm his daughter & my dad said he hated me & disowned me on the phone. My stepmom controls my dad I'm jelaous & hurt. I feel worthless & no reason to live anymore. That b*tch took everything I had away. I apologized to my dad. He keeps making promises to take me out to lunch. I'm very upset & im going to cut him off. I'm going to live for myself. My dad is a lawyer & he keeps making excuses not to see me. I feel like never talking to him again. I'm gonna focus on my life & my GED free of his influence. I'm going to walk away from the destructive system.