10 days is not lost. This is a war a war that has been raging for years. Up until now you have been losing miserably. Now you are starting to fight back, you won 100 battles and lost 1. Ok, 99% victory margin is pretty good. 90 days is a nice marker a convenient look and your progress but ultimately meaningless. More precious to me on the 90 day chart is not the length of my streak, but the cummulative days clean.
Go back and read your opening post. You wanted 12 hours of freedom, you just had 240 hours of freedom.
This is a strong force, years of masturbating at the slightest drop of a hat does no go away in a day. You had an urge and you fell. But start again stay clean for that 1 day at a time.
It is not the results that are important in the beginging, it is the process. Keep the process going. Learn the strategies to keep fighting, and the results will happen. Remember those 10 days are yours forever, 100 battles won, that no one can take from you. 100 battles that give so much nachat ruach to Hashem.
KOT