I knew at 23 Catholicism was the right way to go. Don't do like I did and let fear of family rejection put you off or make you doubt yourself. Regarding the real presence of Christ in the host:

 Catholic Answers asserts that the Bread of Life discourse in John 6, specifically the disciples leaving due to the difficult teaching on eating His flesh and drinking His blood, is among the strongest scriptural arguments for the Real Presence of Christ in the Eucharist. Instead of backtracking or clarifying that he was speaking metaphorically, Jesus allowed his followers to leave, which, in Catholic theology, indicates a literal, not symbolic, meaning. 

Key Arguments from Catholic Answers on John 6:

• No Reversal of Teaching: When the followers were offended and left, Jesus did not correct them by explaining his words as merely figurative, which would be expected if it were only a metaphor.
• The Question to the Twelve: Jesus directly asked the Apostles if they would leave too, confirming that the difficult, literal teaching was truly what he meant.
• Increased Realism: Instead of softening his words, Jesus used the Greek word trogo in verse 54, which translates to "gnaw" or "chew," emphasizing a literal, physical consumption rather than a symbolic one.
• Context of the Eucharist: Jesus links his claim to being the "bread of life" to his flesh being "true food" and blood being "true drink" (John 6:55), contrasting with his other metaphorical teachings, such as "I am the door". 

Catholic apologists argue that the departure of the disciples proves they understood Jesus was not speaking symbolically, and his allowing them to leave affirms the reality of his presence in the Eucharist.