Excellent. Get on over there and post roll. No time like the present. Post roll, keep your promise by not using nicotine for the day, then repeat the next day.
I commend you for making this decision at your age. I don't mean that in a condescending way but I started around your age and here I'm, now 39, after over 20 years of using. Fortunately I found this site so tomorrow I will be posting up Day 92. However, I WISH I had known better at your age. GOOD job and take it from me, you need to quit NOW.
Shout if you need anything.