I remember as I was younger, my family - and i remember once during my catechism - It was said to me that the confiteor would be enough to recieve the Eucharist if I had sinned.
I am aware that, for venial sin, prayer, charity and fasting are enough, but grave ones? NO! and I think i am right.
I hope it was because I was young, and they THOUGHT (with a great lack of prudence) that my sins could be only venial.
I also post that after reading that about 1 year ago, there was a discussion about the same subject, whether this formula during the mass could forgive sin just as the sacrament.
Please give your opinions, and most importantly Church teaching.