How can I trample on snakes and scorpions?

I was reading **Luke 10:19** >Behold, I give you the authority to trample on serpents and scorpions, and over all the power of the enemy, and nothing shall by any means hurt you. and I said to myself: "great!", but to be honest I really don't know how to trample serpents and scorpions. I am asking for this because I have a huge difficulty in understanding figurative language because of Asperger's Syndrome. Can somebody help me? I know you can talk to me about the armor of God, but here we go again: figurative language. I need to know which kind of prayers or actions I should do, what passages should I read, but please, let me fight this battle in a practical way. Ps: I'm lacking in using Bible's promises as a weapon. I ask for your help in this also!