A. Focus on your goal, and just keep plodding towards it with blinders on.
A. The ability to train my dog to stop chewing the sofa.
A. Down, Boo, down! (spoken to the dog)
A. Banana Cream Pie! My mother still makes it for me every time I come home (occasionally she'll make two -- one for the family and one just for me!)
A. The Wicked Witch of the West, the original version