Congratulations! JMO, but it's more of a mindset than anything else. And remember, your body is clear of nicotine in about 3 days~ if you've ever had the flu or a cold and didn't smoke for a few days, you 'quit'~ you just didn't know it then.
Something I found helpful was having a glass of ice water close at hand. When I mindlessly reached out for a cig, the water was there instead and taking a sip helped satisfy that hand/mouth habit.
You can do this~ it's been 16 years for me.