Drill 01 · Before
Rehearse it for one minute
Choking when it counts? Close your eyes for 60 seconds and see it go right from your own eyes, then do real reps. Inspired by Epictetus.
Evidence Documented source + study-supported
Warrior Mind Science
Ancient warrior wisdom. Modern performance science. One drill at a time.
Short, practical drills for the moments that count, drawn from samurai, Stoic and Zen traditions and checked against modern research. Every claim tells you how strong the evidence is.
Free · one page · PDF
The Pressure Reset Card
Three short drills for the minute before it counts: the first tee, the big talk, the last rep. One printable page, with the evidence grade for each drill.
- Three drills, each under a minute
- Evidence grade and source for every drill
- Printable: keep it in your bag or wallet
Email me the card
Opens an email to support@warriormindscience.com. We reply with the card and add you to the Field Manual waitlist. We only use your address for that; see the Privacy Policy.
Start here
Three drills to try this week
Each Short teaches one drill in under a minute. Watch it, try it once, then use it when it matters.
Drill 02 · Right before
Say these 3 words
Heart pounding before a big moment? Don't fight it. Say “I am excited”, then go.
Evidence Documented source + study-supported
Drill 03 · After a mistake
The Stoic 10-second reset
Can't let go of a mistake? On the walk back, breathe out slowly, say “that one's done” and pick one focus. Inspired by Seneca.
Evidence Documented source + study-supported; the reset itself is a practice tip
See all 14 published drill Shorts in the library
Not medical advice. These drills are education, not treatment. Breath drills are optional: stop if you feel dizzy, light-headed or unwell. Skip breath holds if you are pregnant or have a heart, lung or seizure condition, and ask your doctor first if you are unsure. Never practice breath holds in or near water, or while driving. In a crisis in the US, call or text 988.
How we grade every claim
Honest about the evidence
Old stories are great teachers, but they are not studies. So every claim we make carries one of these labels, and we tell you which.
The source says it
The original text or record states it. When we say Musashi wrote something, we have checked that he did.
A direct study tested it
At least one published trial tested this kind of drill and measured the result. It doesn't mean it works for everyone, every time.
Worth trying, not settled
Based on indirect evidence, a tradition or a small study. Useful in practice; we say so plainly.
Two more labels: legend means a story told as a story. Speculative ideas are never presented as fact. If we can't find a source, the claim is cut.
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Take the drills further
Warrior Mind Field Manual, Vol. 1
What the free videos don't give you: a one-page Course Card for your bag, a golf pre-shot routine, an 18-hole round plan, and the drills sorted by the moment they're for (before, during and after). Plus 20 fact-checked drills with sources and evidence grades.
Planned contents; may change before launch.
1-on-1 Pressure Audit
A 60-minute 1-on-1 for adult golfers. You leave with a one-page pre-shot routine built from the drills that suit you.
Workshops for clubs and teams
Breath & focus sessions for adult golf clubs and teams, built around the drills in the library.
Photo coming soon
Who's behind it
Troy Brennan, Mental Performance Coach
A breath-centered approach: start with the one lever you can reach in seconds, anywhere, then build focus and composure on top of it.
Not a licensed psychologist or CMPC®. Education and performance coaching, not medical or mental-health treatment.