Will leaving Catholicism keep me out of heaven?

I am thinking about leaving the Catholic church for another Christian church. I have been told that this will block me from entering Heaven. Is this true?

Modolon,

These links should help you understand the position those who defect or apostasize from the faith put themselves in, as well as what you’d be losing should you make that unfortunate decision. Please contact Catholic Answers directly or write to Ask An Apologist again for help with the areas that are troubling you. You are in my prayers!

Recommended Reading:
Can you help me with my struggle?

Am I still considered Catholic?
Have I incurred excommunication through denial of faith?
What does “Formal Defection” from the Church mean?
What sins bring about automatic excommunication?

Additional Reading:
Catholic Answers’ Library

DISCLAIMER: The views and opinions expressed in these forums do not necessarily reflect those of Catholic Answers. For official apologetics resources please visit www.catholic.com.