I know exactly how you feel, I quit a year ago and was successful for 10 months before saying "fuck it" and went and bought a tin. I just quit again 2 days ago and I am feeling the pressure big time. Find things to occupy your mouth like spits, toothpicks or gum. Drink lots of water and avoid any alcohol. For me dip made me drink way more because the two complimented each other, so in a way I am quitting both.
Good Luck