Much of the software running our minds is built to problem-solve. When it doesn't get updated toward a sense of safety, it keeps scanning for threats, resulting in ambient catastrophic thinking.
This can be the major stuff: I didn't get promoted, thus I'll forever be a worthless failure. Or more moderate: she left me on read, thus I'm clearly too much. But where it's most sneaky is in the little, mundane stuff. You're on a Zoom, your colleague's expression changes, looking distracted or even slightly annoyed, and because you're the one talking, you conclude you must've said the wrong thing – oh shit, what did I do, here I go yet again – and all of this is happening while you're still speaking. This kind of minor psychic rupture happens all the time, and it compounds, deepening the division within the self.
Regardless of whether it's major or minor, the practice starts with just noticing how often thinking goes catastrophic, or, in parts language, how often a protector gets activated.
As presence deepens, you might be shocked, as I was, by just how often the mind’s chatter is pure catastrophe. But that noticing is essential; you can't stop a pattern you don't know exists.
From there, first celebrate the catch, as a quick inward yes right when you notice is what trains the reward system to look for the next one. Relax the body and brain. Then see if you can view the arising negative thoughts as energy that needs to clear from the system. You could say it's prior psychological conditioning, karma burning off, or just old code still running, but whatever you call it, it has momentum, and it's surfacing now to be released.
Meeting the thoughts with compassion, instead of another round of self-attack, is what makes them a non-problem. And it's what finally gives the system the safety it never had, so the scanning can stop and the charge starts to drain out. I've found it helps tremendously to bring loving attention to all this, never force.
Seeing the arising of negative thoughts as a natural process of intelligence, part of the healing and coherent order of things, helps you get out of the way and let it move, creating more unity in the self.