A piece of wisdom from
November 23, 2025 · Sunday
The quote
“Were it not for shadows, there would be no beauty.”
— Junichiro Tanizaki · Wabi-Sabi
The concept
Mental Toughness
Become the forged version of yourself. The 40% Rule. The Accountability Mirror. The Cookie Jar. The Suck Index. The Box.
Mental toughness is not grit. It is not Stoicism. It is not Sisu. It overlaps with all three and is the same as none of them. The modern doctrine, codified by David Goggins, Jocko Willink, Mark Divine, and the SEAL selection programs they c…
A practice for today
Before bed tonight, name one thing where the lesson of Mental Toughness. Become the forged version of yourself. The 40% Rule. The Accountability Mirror. The Cookie Jar. The Suck Index. The Box.
From the Bhagavad Gita
Verse 6.35
असंशयं महाबाहो मनो दुर्निग्रहं चलम्। अभ्यासेन तु कौन्तेय वैराग्येण च गृह्यते॥
“Without doubt, O mighty-armed, the mind is difficult to control and restless. But by practice and by dispassion, it can be brought under control.”
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