Do you use your phone or an alarm clock?
I go to bed early so that I can wake up naturally at a reasonable time. I also keep my phone in another room so that I have to get up to turn it off when I use it as an alarm clock.
Nick Littlehales wrote a book called ‘Sleep’, which is very interesting, I recommend giving that a read. Mudita have a lot of books in their resources section, a few are related to sleep.
I use my alarm clock on my smartphone.
I splurged for a Lexon Flip. No more phone in the bedroom plus it looks nice.