From a newbies perspective:

I’m 21 started smoking with friends and stuff when I was about 14 (thought it was cool) by about 16 I was smoking allot due to having ADHD for me smoking was the only way I could properly relax and set my mind to my college work and all the way up into university doing the work I do now.

I have only been off the fags for. About a week but vapeing is doing exactly what the cigarettes did for me – calms me down and sets my mind straight – without the constant chest pains and coughs.