To deny this is to deny the Bible was inspired by God!
Yes, your doctrine is the only one that is correct; any other doctrine which believes otherwise - which includes most of the Protestants, and large groups within the Catholic church up until 1215 - most be heretics.
In essence, you are the gatekeeper to who can have communion with Him; you have replaced Jesus as the gatekeeper. Your Church annoints its doctrine (which was formalized in 1215 with the Lateran Council) as the sole means of communication with God. I will let you ruminate on your newly claimed position in the hierarchy of a man's relationship with God.
I wish you a Blessed Evening!