Do you tend to write in an apologetic tone for things that don’t need justification? How many times do you make a point by saying “I’m no expert, but…”? If that sounds like you, downloading Google Chrome’s extension Just Not Sorry could help. The free Gmail plug-in warns you when a word or phrase you’re about to send undermines your message.

Source: Stop Undermining Your Professional Voice with a Gmail Plug-In | PSFK