“Thoughts can represent the lower or bodily level of experience, or the higher or spiritual level of experience. ³One makes the physical, and the other creates the spiritual. (ACIM, T-1.I.12:2-3)
Father, Your Son is perfect. ²When I think that I am hurt in any way, it is because I have forgotten who I am, and that I am as You created me.
³Your Thoughts can only bring me happiness. ⁴If ever I am sad or hurt or ill, I have forgotten what You think, and put my little meaningless ideas in place of where Your Thoughts belong, and where they are. ⁵I can be hurt by nothing but my thoughts. ⁶The Thoughts I think with You can only bless. ⁷The Thoughts I think with You alone are true. (ACIM, W-281.1:1-7)
If you are willing to renounce the role of guardian of your thought system and open it to me, I will correct it very gently and lead you back to God. (ACIM, T-4.I.4:7). 
We said before that the Holy Spirit is evaluative, and must be. ²He sorts out the true from the false in your mind, and teaches you to judge every thought you allow to enter it in the light of what God put there. ³Whatever is in accord with this light He retains, to strengthen the Kingdom in you.” (ACIM, T-6.V-C.1:1-3)
A Course In Miracles, ACIM.org