A Substack on personal agency, motivation, and self-change, with essays on willpower, thinking habits, and one author's experience with testosterone treatment.
HN links it for its writing on agency; one commenter points to a TED talk post there as an interesting treatment of a term often used but rarely defined.
This Ted Talk from his wife is also very interesting:
https://usefulfictions.substack.com/p/behold-my-ted-talk
The topic is agency. Which is a word I hear often used by rarely defined or described in detail.
She talks about agency as being the key to going from drug addict to CEO of a successful organization, and the specific habits that process involved.