Quitting NIC, p*rn, weed, and social media, cutting off my only friend all at once at the age of 16? is this too much ?

Yo so I'm 16 and ive realized theres a lot of bad stuff in my life I need to change. I revolved myself around shitty people and I know what I want to do in life, I especially want to get closer with god but Im scared of quitting everything, even my one and only friendship thats holdin me back from going steps forward. Im gonna be alone in school, especially since alot of people have seen me and this particular dude as close friends but I realized my values dont really align with his. We find the same things funny but we have different aspirations and habtis. and I am going to be feeling shitty, im in highschool and people are gonna be asking me with what happened for a while. Im also loaded with some extracirriculars and im battling anxiety from the nicotine. Should I just say fuck it and do it now? quit everything get over the fucking wall of this miserable lost life of mine and hope to find tranquility and peace on the other side?Thanks