If I take NyQuil I sleep soundly and am well rested (I should probably look into specific sleep aids like Ambien etc). If not I'm probably taking hours to fall asleep and can't get back to it if I wake up to use the bathroom or for whatever reason. (Even with blue light filters on I'm sure my tendency to start playing on my phone or computer if it's been 15+ minutes doesn't help there.) If I'm drinking it can be hit or miss depending on how tired I am too. If I'm with the girlfriend there's a good chance I won't even get to sleep between her shifting positions & the miniscule amount of bed & pillow space her subconscious graciously allows me to use.
There might be nothing I envy more than people who can quickly fall soundly asleep.