>One of the healthy side effects is that you'll rarely end up with the "can you just quickly add x" requests
Up until now I've always billed by the hour, but this sentence alone has convinced me to switch over to daily. Those "10 minute" requests drive me absolutely insane. Even though that time is billable it takes a large toll on my mental well-being.
And really, that's the entire point: as a developer your effectiveness in smaller time increments is usually limited. Context switching has a cognitive cost that's generally paid in larger time chunks, so it makes sense to set your client expectations in those terms.
And regardless of the time it takes you to deliver something, they should be paying you in terms of the value they get from it.
Up until now I've always billed by the hour, but this sentence alone has convinced me to switch over to daily. Those "10 minute" requests drive me absolutely insane. Even though that time is billable it takes a large toll on my mental well-being.