It's half two in the morning and you're doing sums. Four hours if you fall asleep now. Three and a half if you don't. And the more you push for sleep, the further away it goes.
Nights like that have a way of spilling into everything else. You're short with people you love, you read the same work email four times, you turn down plans because you haven't the energy. Sleep stops being something that just happens and becomes something your mind keeps circling back to.
Online CBT for insomnia, usually shortened to CBT-I, is a structured talking therapy for exactly this. You meet your therapist by secure video from home, or anywhere private, so it works whether you're in Dublin, Leitrim, or a commuter town with no therapist nearby.