Oh, ok - sorry, I didn't pick up on that. I don't know if there is one specific 'technique' but there are certainly things you could try. Some of the things that have worked for my system are talking with the alter (if you have good internal communication you can do this directly, and if you don't you can try talking 'at' them or communicating via journal) and suggesting things for them to try. ie for anxiety you could suggest trying anything that can be used to calm - holding a special object, grounding techniques like counting things in the environment, journal writing or cuddling a blanket or toy... Whatever kinds of things you think might work for you and your system.