Heavy smoker pre pregnancy

My friend mentioned she was smoking quite abit when she was in first trimester then she cut down to 1-2 sticks ..however she says it’s not a good example. Anyway, go read up on the side effect on how smoking affect babies and who knows your mother instinct will instantly make you stop smoking immediately? I used to smoke at least 20 sticks everyday but one day while taking care of my dad in the hospital , I suddenly realise the best way to be responsible to your love ones are to keep yourself healthy in order to take care of them .. thus I didn’t even finish my last packet and I stopped smoking ever since.. it’s been 4-5 years since I stopped.. within 1 year the temptation was still there on and off especially when I am going through stress but I tell myself, if I can stop for so many days, I shouldn’t spoil the effort I put in previously… it’s a lot of strong willed thinking going on , not easy but can be done! It’s only difficult if you tell yourself cannot do it. All the best and congrats on your pregnancy!