As a Catholic, come Christmas Eve, I'm not looking to go out to by a gallon of milk but am preparing myself for the peace, joy and stillness of Midnight Mass with the rest of my universal faith community. It's understandable that a person with a singular, individual, self-styled spirituality might experience no small amount of frustration when it comes to relating to the larger body of Christianity, but it's the Church which keeps me from being confused by the fog of denominationalism or being 'tossed by the waves of every teaching'.
I suspect the problem you're having is a result from the lack of defining your own dogma and thus you're having a hard time defending it or at least convincing others to accept it. As a Catholic, there is no question as to what is dogmatic and what is to be believed, and even though we are attacked from both outside Christendom and within, there is no cause for frustration but a confidence in knowing that as a Catholic, I have complete and easy access to the fullness of God's revealed Truth.
I pray that you may rest in the peace that comes from Christ.