Resist the urge to send your boss that thumbs up or happy face emoji (even if he or she sends you them). It’s easy for communication to get misconstrued via text and you certainly don’t want your boss to take your emoji the wrong way. While everyone has a different relationship with their coworkers and each office environment is different, it’s best to avoid this work habit until you’re better acquainted with your work atmosphere. “Using emoticons in e-mail makes people subconsciously think you’re incompetent,” warns Penelope Trunk, career coach. And make sure you never say these 15 things via text or email.