Tips for "White Knuckling"

I've got just shy of 5 months of sobriety from sex addiction and lately I have been feeling like I'm just sort of powering through and on edge. The only thing that keeps me sober on some days is the fear of breaking sobriety. It feels like I'm white knuckling and I would love for anyone here to share their experience, strength, advice, and hope for dealing with "white knuckling."