giving up really helped
This is the worst thing you can possibly say. Don't listen to this guy and don't ever give up.
I don't know you and your dad, but perhaps he's telling you this because he doesn't want you to give up. Does he know how you feel about this and if he doesn't, would you sit down and talk with him about it? If he wants the same thing for you that you want, then perhaps you can both find a solution to it.
Also, try and look inside yourself and think about what you're doing in life. Are you happy with the things you're doing? Things will have to change but you need your own help to find out what it needs to be.