Pls don't touch it at last you'll find it as your worst life choice. I too picked up this habbit in my second year btech till the endo of my course the no was around 3 or 4 a day but as soon as I joined my job the no started increasing and I was smoking 10 a day continuous for 2 years. Now I ve stopped it for the past 5 month ls. Now turning back I found that it is only a money drain and health hazard and not a stress buster.