Will this add any value to my life?

I am 22 , in final year of my engineering, never been a regular/occasional drunker(tasted one sip of Bacardi bczz my friends were forcing me on my birthday that's it) , never smoked despite of having chain smoker friends, never tasted tea , i occasionally drink coffee like once or twice in every 6 months . Although I daily consume a glass of milk as a habit . When I look at my friends who are smoking Marlboro like having water , drinking and even to many others who are doing same stuff , i think even they are having their lives full of these and i m not , i think it's still not an achievement , bczz at some point of time, those people will als do great in their lives, but what did I achieve till now even after staying away from all these ?