I know that Catholicism is the WAY. I don’t think I could be any other religion.
The reason I ask this question is that my mother died last summer and I am desperate to see her again in Heaven. I’m just afraid I’m going to forget something and not make it. Catholicism can be difficult, but getting to Heaven shouldn’t be easy.
Don’t worry about forgetting something. The way the Sacrament works is that if you confess all the sins you can remember during one confession, then
all your sins have been forgiven up to that point. If you remember something else later, you are still forgiven for it, but you are encouraged to confess it anyway to receive the grace of the Sacrament and to make proper penance.
As for your grandmother, no one but God knew her heart and what she understood or didn’t understand about the faith. I know many people like her, and I do not doubt God’s mercy and love for them.
Please know that the rules of the faith are not there to scare or control you, but to guide you. When I first learned that missing Mass was a mortal sin, I thought it seemed extreme. But then I realized that the whole reason it exists is to remind you where your heart should be, and I was relieved to find that I had no desire to miss Mass anyway. The written law seems demanding, but when it is written on your heart, it is much easier to follow-- and you don’t even realize you are following it because it becomes natural to you. Know this, and pray that God puts his laws on your heart, so your faith is not one that is forced, but one that is loved.
God is so high above us that sometimes his demands seem too difficult for humans, but he is patient and understanding and eager to help us. If you worry about not making heaven tell Jesus this. Tell him you are afraid, that you are intimidated, that you are weak, but that you have the desire to be perfect. And he will guide you and help you. This is why the Sacraments are so helpful; more graces. If you have difficulty paying attention in Mass or understanding Confession, tell Jesus this, and ask him to help you. If you can’t feel him, tell Him and ask Him to grant you patience and faith to know he’s helping you. It will come. With every Eucharist, offer up your struggles, anxieties, hopes, prayers, difficulties, triumphs, sadness, joy— and ask Jesus to make you everything he is. Remain in him, and he will remain in you.
Know that Catholicism primarily a spirited faith. The doctrine, if you are well-informed about its purpose and meaning, will lead you to its heart. That’s the only reason it exists. When you reach the heart of Catholicism, which is love for God, then the doctrine tends disappear (in the sense that your reason for following it changes), just like the scaffolding from a beautiful home.