I can't read self-help books but like reading your self-help posts. 😀

I also follow these three strategies when there's too much work and less time.
I prioritize and set time frames and to maintain the focus level, I turn my phone on silent mode or just simply put it away. For me, the biggest distraction is a phone. I don't use any management apps because I know I will get distracted. That's why I keep a notebook around and write down everything thing in it, like to-do lists and other plans.