Help!!

I'm really struggling with my faith rn. I'm only 13 but I gave my life to God when I was 4. Since I went into school at age 10 I have struggled more and more with my faith so that now I feel like there's a wall between me and God. I will wake up in the night virtually on screaming point because I feel like I will go to hell. My values have been slipping - I've found myself lying to my parents, spending money when I shouldn't and swearing. Please someone help me (and yes I've told my mum and she is praying with me)