One letter a week.
Personal by choice.
A free weekly read from LifeByLogic. Enter your email and select Subscribe to join. No inbox confirmation is needed. Members can choose a personal edition in their account: it lists their saved results from our 11 core assessments by name and date, and when each is due for a retake. A few minutes to read, with an unsubscribe option in every issue.
One idea, three ways in.
Every issue is short and built for thinking, not scrolling — one well-sourced idea from the LifeByLogic labs, and two ways to act on it before the next one arrives.
An idea, well-cited
One finding from cognitive science, behavioral economics, or decision research — sourced inline, with DOIs where they exist. If a study has been contested or replicated, the letter says so.
No assertion without a source.A tool to try
A pointer to one of the LifeByLogic instruments that fits the week’s idea — the same validated tools you already use, placed in the context where they earn their keep.
Methodology you can apply.A move to make
One small, concrete experiment to run before the next letter lands. Specific enough to actually do; modest enough to actually finish.
Read in minutes. Use the same day.Choose the edition that fits you.
Every reader receives the shared edition. Members who opt in receive the personal edition instead: their saved results from our 11 core assessments by name and date above the same reviewed letter. It never carries a score.
The shared edition
Start here. One cited idea, one tool, one move — the same well-made letter for every reader. No account required; just your email.
Everyone, every week.Your personal edition
Subscribe, create a free account with the same email, then choose Personal Logic Letter under Email settings. Each week your letter lists your saved results from our 11 core assessments by name and date, and when each is due for a retake, above the shared edition. Personalization is optional and can be turned off at any time.
Your choice, any time.The questions we hear most.
A few quick answers before you sign up.
Yes. The weekly letter is free and meant to stay that way. If we ever add a paid offering, it would be additive — most likely tool-level extras like detailed PDF reports — never a removal of the free letter you signed up for.
Use the same email as your verified LifeByLogic account, subscribe, and choose Personal Logic Letter under Email settings in the app. Your next letter then lists your saved results from our 11 core assessments by name and date, and when each is due for a retake, above the shared edition. It never carries a score or your check-ins. Without that separate choice, you keep the shared edition. Dashboard reminders are another optional choice.
The Logic Letter is a weekly read. Signup on this page is complete when you submit your email; there is no additional confirmation email. Your subscription is free, and each issue has an unsubscribe option.
Your email address — and, once the personal edition starts and only if you choose it, the assessment results already saved to your account. No tracking pixels, no per-click profiling beyond aggregate counts, and the list is never shared or sold. Full details are in our Privacy Policy.
Use your email app’s unsubscribe action, or open the link at the bottom of an issue and select Unsubscribe. This stops the letter and optional dashboard reminders. To resume a previous opt-out, sign in to your verified account and select Resume Logic Letter in Email settings.
Start with the shared edition. Choose the personal one when it arrives.