Does family play important role on one's individualistic personality?

Yes, family attitudes do influence children's personalities. Whilst I can say that it's good to have a fun side in your life, you must now realise that this is not what life is about. You say that your grandfathers own businesses and therefore, you don't have to worry about earning your own living. Also, you think that you will inherit the businesses soon. So, if you or your friend do not take the time to learn about the businesses concerned, how do you think that you will run it? Also, you don't seem to mind that you do nothing to earn your keep or be a responsible adult. You also think that your grandfathers are going to die soon. Well, this may come as a surprise to you both but, wake up! you are living in La-La-land! You should spend more time trying to make yourself worthy of inheriting the businesses and being knowledgeable enough to run those businesses otherwise you will destroy something that took a lifetime for your grandfather to build. Maybe he has realised this already and you don't know it. I think that you are just spoiled and incapable of being responsible.