CAN ANYONE - please - GIVE ME ADVICE? (smoking cigarettes or vaping..)

I use to smoke and vape before, but I was able to completely stop when I found out that I was pregnant. Now that I have given birth to a very handsome baby boy, I really really really want to smoke again or just use vape instead. I know all the risks but still.......... CAN ANYONE - please - GIVE ME ADVICE? (Especially from someone who also experienced/experiencing the same dilemma)