If you really want to understand something, write about it. Maya Angelou said as much in an interview, and this blog builds three journalling posts around it, which beats the usual instruction to keep a diary.
The writing on habits is unusually well aimed. Most people reach personal development as adults, generally after something has gone badly, by which point there are habits to unlearn first, so teaching children the same principles early skips that entire step. That argument is clear and it does not appear often.
There are practical pieces on meditation, on becoming an early riser, and on doing the worst task of the day first, each short enough to act on. A companion post defines gratitude before recommending it, and another asks whether you have switched off the urge to complain about everything.
A post on the toughest ultramarathon races in the world arrives from nowhere and is a pleasure.
Read the journalling posts and begin with the one about resolving something you cannot settle.