Congrats on the four months cut free, first of all. Secondly, like everyone said, just jump back on the wagon... We all slip up from time to time, all we can do is pick ourselves up and try, try again.

I've found typing to be very helpful as well. When I'd write when I got the urge, I'd see the little ball-point on the pen and see it was kinda sharp and it'd trigger me even more... So now when I get anxious and want to cut, I start typing my frustrations out on wordpad or talk to friends online... It helps tremendously.