The retrograde Mercury in Aries is a period which requires a great deal of conscious effort on your part with regards to your communication style and content with others. There is a strong tendency to blurt things out or to be blunt in ways that are less than useful.
Your perception of what other people say may be skewed by your overly eager and anxious desire for action. You are highly impatient to get things moving and that translates to impulsive words that may cause quite a stir in others. One of the hardest but most important feats to accomplish during this period is self-restraint, especially when feeling most passionate about a subject.
You will create equally passionate responses, and some of them will not be so fun to deal with. Make sure you say nothing that you'll regret later, especially words that are harsh and critical. Your words are more likely to be misconstrued even if you have good intentions.
Likewise, you are likely to misconstrue a comment someone else makes to you. One way to circumvent a potentially hostile conversation is by using neutral, non-threatening language. Try to stay on lighter subjects, if you can.
Learn more about Mercury retrograde in the signs: Mercury retrograde in Aries, Mercury retrograde in Taurus, Mercury retrograde in Gemini, Mercury retrograde in Cancer, Mercury retrograde in Leo, Mercury retrograde in Virgo, Mercury retrograde in Libra, Mercury retrograde in Scorpio, Mercury retrograde in Sagittarius, Mercury retrograde in Capricorn, Mercury retrograde in Aquarius, Mercury retrograde in Pisces