Smokers who quit or are trying

Don't judge but I smoke & I'm 17. I've been smoking for at least three years every day. I usually only go through a pack in a day & a half. Now I'm almost close to finishing a pack a day. Any tips or advice on how to quit? & how has quitting afftected you? I'm having a really hard time. I don't wanna quit but i think i need to. Every morning i wake up & my cough is just horrible. But sometimes i feel like cigarettes help me cope & i need them & don't know what I'd do without them.