Dude if it works as a motivation, my Grandma, uncle and a cousin (son of that uncle) all related to my father, the 3 of them died of lung cancer caused by smoking. My Grandma and uncle died at their mid 50´s and my cousin at his mid 40´s.
Thank god my father is smart and has never smoked (he doesn´t drink alcohol either) a single cigarette in his entire life, now he is at his mid 60´s and so healthy. Actually, and since around 12 years ago, none in my family (i have 2 sisters and 1 brother older than me, i´m 28 by the way) smokes anymore due to this horrible stories we have witnessed. My older sister and my bro used to, but they quitted. They are living examples that it is possible.
So, i recommend you to be smart and keep up! Keep your self motivated with people that has made it through, never give up, and before the temptation is so damn hard, go to a doctor, sure he can help you to go easier trough this.
And by the way, congrats just for trying! Not everyone dares to even think about it.