If you aren’t using LLMs to improve your decision making you will fall behind…
On a daily or weekly basis (depending on how busy I am) I share with ChatGPT my biometric stats (fasting glucose/ketones, sleep scores, heart rate data, etc), a ranking system I’ve created to monitor my mental health, and probably engage in 5-10 conversations about something health related. Similarly, I’ve taken to asking it for advice on dealing with everything from employee issues to capital planning (my day job is running a small chemical manufacturing business with my dad). The last thing I spend tons of time using LLMs for is doing research that informs my portfolio management decisions (I manage money for various friends and family).
When you put it all together, ChatGPT is building out a very detailed profile not only me as an operator and as a person, but also of how accurately I perceive myself and my own abilities.
Already I’ve experienced some moments that gave me chills where ChatGPT was able to identify connections that I had failed to see. For example, I had been trying for months to figure out how to re-create days where I felt like my brain was functioning at a vastly superior level - what I call a “brain on fire day” (energy, speed, recall, reflexes in tennis, all excellent). I had been trying to correlate it with sleep, diet, exercise, etc - to no avail. ChatGPT noticed that I used certain verbiage to describe how I felt more frequently (e.g. Amazing, Extreme Energy, etc) ONLY when I had recently told it that I was in deep ketosis (2.0 mmol/L+).
Sure enough, so long as I maintain my ketones at that level I feel incredible, even if my sleep isn’t that good… I can now - reliably - create “brain on fire” days.
Take a moment to think about how incredible this is. ChatGPT has helped me unlock more energy - literally giving me more time per day! In essence, ChatGPT just extended my functional lifespan!
One of the toughest things in life generally speaking is simply executing on the best advice anyone has ever given anyone else: do more of what works and less of what doesn’t. If you can follow this advice over decades you are sure to become happy, healthy and wealthy. Unfortunately, even with herculean amounts of self-discipline and keen introspective observance - it’s extremely difficult and time consuming to monitor “what is working” and “what isn’t working” across all facets of our daily lives. Often times - as with my quest to figure out how to reliably experience “brain on fire” days - it is simply beyond our ability to identify the relevant causal relationships.
LLMs are going to change this.
One thing you will notice everywhere once you start keeping an eye out for it is how frequently people update their “personal belief history”. They will claim not to have believed something which they did in fact believe. They will claim to have predicted something that was in fact the polar opposite of what they thought would happen.
Twitter is an amazing resource for seeing this in action because people regularly post tweets that go viral where public figures or big accounts are saying something in 2025 that is directly contrary to something they said in the recent past.
Similarly, Twitter also calls out people like Ray Dalio and Howard Marks who have been calling for bear markets every year since the financial crisis - meanwhile markets are up many hundreds of percent…
The most pervasive (and likely one of the most pernicious) examples of this in action where it really matters is people [on the left and right] “predicting” that under the new administration the world will fall apart. People thinking Obama would turn the US into a communist country, for example. People today thinking that Trump is going to crash our economy and turn us into a dictatorship (and run for a third term).
Having these fears is not only irrational - it has a real impact on life. You will make bad money choices if you are irrationally pessimistic about the future. You will have less mental energy if you are worried that the country is about to implode.
But unless you are aware that you are prone to these types of errors you won’t be able to correct them. And, spoiler alert - everyone is prone to these types of errors. Evolution meant updating your belief systems to be in line with the group - elsewise you were at risk of being ostracized - which meant certain death 100,000 years ago.
Today - most beliefs are not rationally derived probabilistic views of the world - they are the result of media or algorithms optimizing monetization of thought bubbles - or worse…
This is why many great investors keep journals and write long letters - it forces them to track their historical decision making processes so that they don’t fall prey to “re-writing” history. It keeps them rational and accountable, and facilitates improvement over time.
I don’t think I’m being hyperbolic to say that improving decision making by some percentage (10%? 15%?) would have a profound impact when compounded over time. Already I’m finding myself getting 1-2+ hours of extra focused work per day by having identified that deep ketosis fills me with energy.
LLMs are naturally (innately) optimistic - because optimism is the rational perspective given the corpus of human history we have to extrapolate from. So - by using LLMs not only as a daily journal and a clever statistician, but also as a trusted counselor - it will be impossible not to benefit via improved decision making and by having a clearer picture both of the world as it exists today and your ability to accurately diagnose your own strengths and weaknesses.
My goal moving forward is to upload as much information about myself, my business, my finances, my health - and so on - as possible. Imagine being able to query an LLM about your poor investment decisions… Alternatively, imagine being able to query an LLM about the similarities between the decisions that turned out great…
Imagine literally figuring out how to biohack yourself - how to feel stronger, with more energy, more mental clarity…
Consider the following:
-1 extra hour of energy per day is equivalent to a 12.5% increase in productivity (assuming an 8 hour day—9/8 = 1.125) - which is equivalent to getting an entire extra month PER YEAR!
-Earning an extra 1% per year on your portfolio is worth 30%+ in the size of your nest egg compounded over 30 years…