Quitting cigarettes

I’m trying to quit smoking but I have way too many stressful things goin on. my life is just a bunch of sadness and stresss! How do I stop 😭 what else can I do to give me a peace of mind? Between my bestfriend dying at 25, I can’t get over that, I’m just sad all the time even if I’m happy I know it doesn’t last for long 💔 , being stressed with bills, my dad left to jail, and just feeling alone... 😭😭😭 I don’t want to smoke but at this point I think I need to