No longer age 13 I don't keep a daily diary, though I did so into my ,,, early 40s. Give or take five or six years (or more) where a close relationship, marriage and children negated the desire to reflect ...
In the past i saw reflection as a valuable tool to build towards career and project ideas - but you tip over a virtual watershead at some point where a dairy, daily or otherwise, is looking back. I try to keep a log of stuff I do AM/PM - best divided into three parts though: morning, afternoon and evening. I sleep 6 1/2 hours on average and get at least 1 hour, sometimes 2 hours of real work done before 6.00am. It's how I work. I wake, I have something to do, I get it done and either my sad laptop's battery requires plugging in or I start to feel tired - joy! I love sleep, and love going to bed to do exactly that whether it is 10.39pm having watched a movie, 4:38am having been up in the middle of the night, or if I have felt around 1:39pm that 'Forty Winks' are required.
Make what you will of this; I rather think everyone has their own pattern of sleep, not asleep, active and alert or not ... like a fingerprint. My sleep pattern defines me.
If the magic course on woodland management or environment conservation exists as a postgraduate degree I might seek a way to finance it over a new car. Open Learn offers stuff like this for free. But 'Free' never got me on the starting line ... or got me over the finish.