How can i target only cancer cells in my body using the mitosis process?

You can't: You need to understand that cancer cells are only very slightly different in their basic biology from other cells in our body. As they evolve, they become somewhat more vulnerable to chemotherapeutic agents that kill dividing cells, mostly because they lose some of their defenses as they evolve invasiveness. Your healthy cells constantly divide -- if this fails, you're dead in just a few days.