Breaking the habit

So we've decided to go paleo so the first thing we do is get rid of all bread, rice, pasta and grains in my kitchen.  But wait hold on, that's almost everything!!  Of course I would never throw away food, therefore I just stopped buying it and waited for it to be all gone. Vegetables are the replacement.  But who would know that eating healthy and the paleo lifestyle would cause a huge commotion at my house.  According to my 15 year old daughter, “there isn’t a thing to eat” at our house.  What about the $168 I spent yesterday buying groceries?  I guess vegetables, nuts, meat and fish aren’t anything!!! Therefore she had her grandmother take her grocery shopping and when they got back guess what she brought?  Yep....bread, pasta and tons of ice cream!! (Now that's food)  Coming from a Latin family where every meal needs to have rice and beans....it's difficult. We're all accustomed to this, therefore breaking the habit will be a tedious job.  But I will do it.  Even if it means having to cook 2 meals, one for the hubby and I and one for my 2 girls. 
I really am trying over here.  But, I will tell you... the most difficult part of all this is breakfast.  My daily morning routine is going to a gas station near my house where they bake fresh bread every morning and getting a wheat panini "tostada" with butter and a cafe con leche.  Rain or shine you can find me there at about 9:30 am.   But I'm sticking to my guns and this entire week no tostada or cafe con leche for me!