Amazing man, it wont be easy quitting whitout any alternatives but it's probably the best way to avoid getting seriously addicted to something else along the way.
I quit smoking for about 5-6 months ago, not even counting anymore. You have to keep yourself busy and try to find new routines, that was the worst part for me, no more cigarettes to my morning coffe and after food cigarettes and so on, but I bet you can do it! Be strong my friend!