You spend months coding an app, you refactor and restructure multiple times, you apply all sorts of smart patterns and algorithms you learned over all those years, you go back to the books even, you spend money on a ton of assets, localization, marketing, you spend time contacting hundreds of people that could boost your app in the ocean of apps. And once your app hits the store, people complain that $0.99 is too much.

Craziest deadline? Anything within a month from now (unless you like your projects shitty).

When you get used to Swift and keep forgetting semicolons in other languages.

When you answer an email right away and a couple of days later they ask you if you received their email.

When you work your ass off to meet the deadline and once you miraculously make it, the client decides to wait with the launch for a few more weeks.