I quote from your captioned CCC clause:

They have received the anointing of the Holy Spirit, who instructs them and guides them into all truth.

These words clearly remind the faithful that The Holy Spirit, present in the life of every human person, guides us into all truth.

John 14

Do you believe that to be TRUE or simply your OPINION ?

Jesus Promises the Holy Spirit

15 “If you love me, keep my commands. 16 And I will ask the Father, and he will give you another advocate to help you and be with you forever— 17 the Spirit of truth. The world cannot accept him, because it neither sees him nor knows him. But you know him, for he lives with you and will be in you.

So by FAITH we can know something is TRUE and not just an OPINION. That's where we differ from the WORLD.