My mother suffered from many physical conditions and a few mental health ones as a result, She used to smoke like a chimney for comfort and stress relief, the doc told her she should stop smoking, she barked at him "What? Smoking has saved my bloody life, if it wasn't for smoking I would've topped myself years ago" anyway she ended up vaping about a year before me, she smoked over 50 years and me over 34 years so vaping was the answer for us and my wife, so imo it's the only thing apart from will power available to quit that cigs, as for being weak, no your not weak just human, the choice is yours nobody else's nobody has a right to judge you unless they are perfect in every way and even then they should shut up. Good luck to you.