When I am experiencing trouble with sleep and anxiety I get up out of bed and do something until the feelings pass. If the thoughts are troubling I acknowledge that I'm having bad feelings but will not focus on them for the time being but later (if I need to do that). I will frequently read SR and post on topics or share that I'm having racing thoughts. When I'm tired I will then lie down and try to sleep again, usually with success. Sometimes I'm up more than once at night but not always with anxiety, and yet the process works again. It also takes time for anxious feelings from quitting to subside.