A writing habit most of us have is to write and send what comes into our head 90% of the time.
A good writing habit to develop is the careful reassessment of your post, reply, or article and keenness to details.
Understand that your time is of importance and other people think the same. Do not let your valuable time be wasted because of a misunderstood statement that could have been avoided in the first place.
Stop and think about how many emails you write each day at work. According to a study conducted by Carleton University, professionals spend one-third of their time at work reading and answering emails. You might spend more than this, or less, but chances are, a significant portion of your day is spent writing something.