Everyone is fighting battles we know nothing about.

Generally speaking [with supplements], the greater the effect, the greater the side effect. If you don’t know what the side effects are, and the supplement has a very high amplitude effect, then you’re just the sucker at the poker table who doesn’t realize he’s the sucker. There are very rarely free lunches when it comes to biochemical enhancement.

Two good metrics to assess how your life is going: How peaceful are you when you go to bed, and how excited are you when you wake up in the morning?

Instead of trying hard to pick projects to work on, aim to develop skills and relationships that transcend any one narrow area of specialty.

If you're serious all the time, you'll burn out before you get any other really serious work done. You can do serious work without taking yourself and it too seriously, because if you do that, you just burn out. I have yet to see a single exception.

We don't know how the vaccine affects fertility or long-term fertility ... I would agree with that but disagree that that automatically means one should not be vaccinated because if you're going to apply that logic to the vaccine, you should apply that logic elsewhere. And I would just love to see anyone open their cabinet and tell me what the long-term fertility implications are for all the supplements and medications and Chinese herbs and so on that they have in their cabinet. They can't...

If you are able to observe and hone your decision-making with even very small investments... that can transfer into better decision-making in other areas. We're all investors—of time, energy, capital. And you can choose to become better at those things, or you can remain blissfully unaware. But one way or another, you are making decisions about investment every day.

As far as reading, these days, I definitely don't rush. If I'm rushing through a book, I should generally just drop the book—it's not good enough ... You should only be choosing books that you are sad to see end.

The narratives that control us, the stories we tell ourselves, shape our reality. And so often, we just take it as assumed that what we're thinking is true, it's accurate, it's a reflection of reality. So, 'don't believe everything you think,' I think, has some really profound implications for well-being, it has profound implications for performance, it has profound implications for everything since your entire experience of life is passed through this filter that we call the mind.

Time management is important, but time management doesn’t matter unless you have attention management.

Even without sun exposure, I think there's tremendous value in, as soon as you get up, doing 5-20 minutes of exercise. It could be just about anything that moves your body. And I do think that motion—whether that's jumping rope, kettlebell swings, something dynamic, swimming—is of great value. It seems to really turn on my neural drive in a way that helps my cognition and mood tremendously for the rest of the day.

Supplements can become a crutch for people who aren’t paying sufficient attention to their diet, sleep, and other parameters—they become a Band-Aid to cover other bad decisions.

Looking back on the last decade, the one thing that I didn’t do soon enough was admit to myself and others that I didn’t know certain things. The quicker you are to come forward with the fact that there’s a hole in your knowledge, the quicker that hole will be filled.

We don't have that much time on the planet ... If I look at the average age of death of males in my family going back many generations.... it's about 85. Like, it doesn't really matter what you do, as long as you don't get hit by a bus or fall off a cliff, you're probably going to die around 85.

For me, luxury in a way, more than anything else, is the feeling of being unrushed.

Tim's advice for helping to better understand your partner's (and everyone else's) emotions.

...What you resist persists ... It's not that the emotion is the problem; it's your response to the emotion that's the problem.

When you have a 10, 15-year, 20-year time horizon, you can think about making decisions in a very different way—you relate to feeling rushed or pressured in a very different way.

I have many books in my house now that I would willingly read a second time. I think that should be the bar for reading anything once. It has to be that good.

Without the Oura Ring, I would not have realized that if I have a sauna right before bed or too late at night (within three hours of going to sleep), it interferes with sleep and also negatively impacts HRV the next day. However, if I have a sauna at, say, 4 or 5 PM, a few hours before dinner, it dramatically improves HRV for the next day or two.

If I have a pain or problem, or if I have a desire or goal, I assume it's very likely that many other people have the same pains, problems, desires, or goals.

Instead of trying to save the world, look at how you can help yourself.

If you want to get out of your monkey mind, at least for me, one of the fastest ways is through the body. And it doesn't take a lot. It really doesn't take a lot. Get outside, walk for a few minutes, jump rope for three to five minutes, and then go back inside.

I'm thinking a lot more about energy management over the next year than time management. I feel like time management should be a downstream decision based on your energy management priorities and rules.

I realized in the last 5-10 years that my ultimate nightmare would be dating a long-haired version of myself.

Psychedelics, in a proper setting with supervision, can provide one the opportunity to do a radical self-assessment that shows you where your blind spots are and where your stories & software are out of date.

You are the average of the five people you spend the most time with, so pick them very carefully, and prune very carefully over time.

You can use intense breathwork, such as holotropic breathwork, to experience non-ordinary states of consciousness—what some might call altered states of consciousness—without drugs.

When in doubt, keep the schedule, reduce the scope.

Time on social media first thing in the morning is probably the most poisonous activity that I could take part in ... What is the amount of time it takes to get in a really good workout? It's going to be about an hour, but a lot can be done in 45 and for even 30 minutes.

'Adversity doesn't build character; adversity reveals character.' You want to know that your partner can navigate rough emotional waters when things are difficult, and not immediately pull out a gun and shoot you in the face.

A lot of people who pride themselves on being achievers spend the vast majority of their time whipping themselves.