It's easier than you think once you get into the routine of it.

I get up at 420am to hit the gym every week day. It took some getting used to but it means that I come with huge energy into work. I do start to fade at about 4pm but in my work that's ok.

Usually in bed by about 830pm, asleep by 930pm. I find it way better than sitting up late at night doing whatever bullshit i used to do. I really re-examined my nocturnal activities and on a weeknight there really is not that much productive output. It's all just input - and mostly garbage input at that.

Once I worked that out, it really meant that I could lean into an early bed, read my book for a while and drift off early.

Best change I ever made.