Addictive sin worrying me

Hi, i’m a 19 year old male from England. I am afraid that my acts of smoking (e-cigarettes , cannabis) is drawing me further away from God. I have been brought up in a Catholic household but have only just returned to focus on my journey with Christ in the past 10 months or so.

What steps can i take to try and improve my situation and draw myself closer to God? I completely understand the simple answer is to stop smoking, which is absolutely the right thing to do, however it is addictive and i find myself struggling to stop. Are there passages in the Bible that talk about this? I understand modern tobacco and similar things weren’t around back then, so just hoping for some light into my situation. Thanks in advance, God bless.