On two occasions today, I've noticed a typo in a text -- after I've sent it. It's internally annoying. If I choose to read a text after I send it, I should read it before I send it, when I can still make a correction.

It's a good lesson: if you're going to proofread, do it when it counts.

Or for me: if you're texting friends, just relax on the proofreading. They know what you meant.