Many people are learning web development with the goal of building an online business. The lure of "automatic income" from an online product is enticing, but building an online business is much different than building a traditional business.
In particular, it's easy for would-be Internet entrepreneurs to underestimate how long it will take to make a living with your new business. I was reminded of how dangerous this pitfall can be when I saw What It Feels Like to Launch a Startup With Two Weeks of Runway and the subsequent Hacker News conversation.
What is a personal runway?
A personal runway is the amount of money you'll need to support yourself and your family until your business can pay you enough to take over that burden or you can find investors to foot the bill.
