That's naive if you are quitting cold turkey. While it's probably becoming less known now, with smoking becoming so taboo and unheard of, it's known to be as addictive as heroin. I quit cold turkey once 10 years ago for four years
The physical part of cigarette smoking is over in about 3 days but the psychological part lasts about 6 months. Hang in there. If I can do it so can you. I quit 37 years ago.