Mercury's the Mercantile God, as well as the energy behind commerce, music, discussion, intellectual pursuits, and technology. The energy of the planet has its fingers in these things too, so retrogrades can cause a feeling of slowness, sluggishness, and uncertainty, all the while making life feel less fulfilling.
Folks tend to get a bit crazier on the roads, and they become less conscious of what they do and say during these periods. You'll likely notice people acting like they're embattled and feeling very haggard, so choosing your words carefully and working to avoid misunderstandings becomes particularly important.
Cultivate an awareness of how you feel and how balanced/unbalanced you are in that moment. Be kind, be understanding, and try to comprehend where others are coming from so that you can work around and with their difficulties. Doing this creates goodwill where frustration and aggravation can otherwise occur, and it makes this period less painful, less troublesome.
Furthermore, I would recommend giving offerings of Sandalwood & Copal to the powers of Mercury during this period. It's a good way to use this juju to your benefit between now and the 19th of August.
Otherwise, go about your day as you would normally and you'll get through this without much trouble. If you feel like this period is going particularly poorly for you, feel free to comment here or contact me directly.
Regards & blessings,
Chris/SE