Hello, everyone! I’m a born-again believer in Jesus Christ saved…

Hello, everyone! I’m a born-again believer in Jesus Christ saved by grace through faith alone. I often struggle with the difference between guilt, (beating myself up mentally and becoming emotionally numb), and conviction, (the Holy Spirit tugging me to do the right thing and pointing out my sin). I also struggle with knowing I am eternally secure, having had specific, real and tangible moments where God has spoken to me and I have understood and delighted in the beauty of the Gospel, and then turning around and repeating the same sin. How can I be confident when I die I will be in God’s presence and stop doubting and allowing guilt and the enemy, Satan the accuser, from messing with me? How can I let go of “feeling” saved and just rest?