Are you worried that your T is going to be judgmental and critical of you, if you report that you "relapsed?" Do you think your T holds the expectation that you should never relapse?

If you report that your situation is hopeless, your T will not agree with you. That would not be criticism of you. A relapse is not a permanent condition. Your T will ask you to work on a strategy to recover from the state of mind that led to the relapse.

It is hard to work on recovery. Your T knows that. Having difficulty - even having so much difficulty that you relapsed - is not total failure. You said that you had not cut all week and that you felt it was better than usual to do that. So you have something positive to report, as well as the relapse.

It is not realistic to think there will not be relapses. Your T knows that. You report the relapse, then you and your T review the strategy you have for prolonging the time before the next relapse. Every day that you don't cut is a day of success. Every hour that you don't cut is an hour of success.

So you can say to your T, "Well, I was succeeding up until . . . . "