Staying in touch with people is one of these asymmetric habits that require little effort, time and resources but has an unlimited upside. It’s the easiest and most effective way to make your life more serendipitous.
Okay enough of that. Since you clicked on the headline I will assume you understand why it makes sense to keep in touch with people.
Unfortunately, for most people (me included) this isn’t something that happens naturally.
So unless you have a solid system, chances are high that you won’t reach out to people regularly and miss out on a ton of fun and opportunities.
This is the system I'm using, inspired by Derek Sivers.