I need something to keep me going while still trapped

I depend on the toxic and emotionally abusive environment I'm in because of my physical disability, and I most likely won't be able to get out until after at least a few more years of this. So many of the meditations and advice that I try to follow focus on the threat not being there anymore, and I'm not completely safe yet. I know I can't really heal, I just need something to try and keep my sanity intact before I get worse. Does anything like that exist? Is there anything I can do to give myself a better sense of security, either in moments of dysregulation or peace? Anger and powerlessness have been eating me up inside, and I can't go on like this without something to keep it at bay.