“Crumb time” is the little pieces of time that get lost throughout the day. Instead of giving away your crumb time to unproductive distractions, build systems that complete big projects with small actions. Today, I’ll tell you how. Crumb time is everywhere throughout our days. Whenever we do something substantial with our time, little chunks of time of various sizes and shapes fall to the floor. What is crumb time? Crumb time has a combination of the following qualities: Short amounts of time. Crumb time can be less than a minute, or several minutes. Unknown lengths of time. You often don’t know when your crumb time will be over. It could end in a few seconds, or a few minutes. Distracting environments. It’s hard enough to focus when you don’t know when you’ll be interrupted, but the environments in which crumb time take place are often noisy, with lots of activity. Some examples of crumb time: Standing in line at an airport: Lots is going on, you’re waiting for your boarding call. Riding in a cab: The scenery is changing, but you might have a good idea how much time you have. Waiting for a friend to meet you for lunch: They could come in the door in two seconds, or twenty minutes. Why do we give away crumb time? Crumb time feels insignificant, and we think we need a controlled environment and a big block of time to do anything useful. You don’t have the time or mental bandwidth, it seems, to make substantial progress reading a book, or writing an article. So, we doomscroll on Twitter, blow off steam with a game such as Wordle, or do something pseudo-productive such as check email once again. Productive uses of crumb time We just give away our crumb time, but we could turn it into something useful. Here are some things you could do with crumb time: Review highlights in your Zettelkasten: My favorite use of crumb time is reviewing my highlights from a book. I export them to Markdown, and whenever I have a moment, I scroll through the highlights in a plain-text app on my phone. I bold any of the highlights that are extra interesting. When my crumb time is over, I mark my place and lock my phone. Learn about something: A crumb-time list is a key component of a system of curiosity management, which I talked about on episode 284. Keep a list of subjects you’d like to learn about, and when you have crumb time, read a Wikipedia page. (I’m not a fan of read-later apps, because the easier it is to save articles, the harder it is to read all of them). Brainstorm social media updates: Twitter is a great place to share ideas, a terrible place to have them. Brainstorm potential tweets in a text file, to polish and schedule later. How about doing nothing at all? Another valid use of your crumb time is simply doing nothing. But when you choose to do something, you may as well do something useful. Anything other than giving away crumb time is better than building that bad habit. The more you give away crumb time, the easier that becomes the default use of your crumb time. Take a seven-day crumb-time challenge You don’t need to change your crumb time habits all at once, forever. Instead, try a seven-day crumb-time challenge. Here’s how: Delete social media apps. You can do most things on Twitter or Instagram from desktop. Get them off your phone, to force yourself to make good use of crumb time. Block social media websites. Use the parental controls on your phone to block websites to which you give away your crumb time. For me that’s twitter.com and instagram.com. On the iPhone, use the “Limit Adult Websites” feature, and add whatever sites you want to the block list. (You can also add adult websites to the allowed sites if that’s your thing.) Set up crumb-time actions. If you have a Zettelkasten, you know what to do. If you don’t have one, for a quick-start you could export your highlights from your favorite book and have them available on your phone. Set up a list of things you’d like to look up when you have crumb time. Set up a scr