I take too much time to change my state and get in flow. Please Help!

I am currently in a chaotic job that feels like a dead end, and I know I need to start looking for a new position. However, my workload is very ad-hoc, and there always seems to be a crisis that draws me in, preventing me from prioritizing my job search. I have accepted that I need to find time during work hours to prepare for my next job.

What strategies have worked for you to quickly shift your mindset and get into job search mode? I often feel overwhelmed by the amount of work on my plate, and I realize that this mindset isn't helpful.