What's happening
At the station direct, Mars's apparent longitudinal speed passes through zero and resumes its forward motion through the zodiac. The geometric overtaking by Earth has completed, and Mars is moving forward again — slowly at first, then at his ordinary pace over the next several weeks.
Because Mars retrograde lasts about ten weeks, the station direct is the closing pivot of the longest review cycle any of the personal planets produce.
The tradition
The tradition reads Mars direct as the return of initiative. What was held, rethought, or abandoned during the retrograde is meant to be re-engaged — this time with better aim. The station retrograde asked what am I actually fighting for; the station direct is where the answer gets tested in motion.
Classical readings note that Mars's effects are most vivid around a station because the planet is apparently stationary and therefore slow in the chart. Slow planets weigh more. The days around Mars direct tend to intensify whatever Martian theme was dominant in the retrograde — a project restarting, a conflict resolving or escalating, a physical practice resuming, an ambition that has been waiting to be named finally named.
How to work with it
Move. The ten weeks were for the review; the station direct is the invitation to act. Restart the training, the project, the confrontation, the ambition — with whatever course correction the retrograde made clear. Mars direct tends to reward the action that has been earned by the pause; it does not reward the action that skipped the pause altogether.
The shadow is the rebound — rushing a decision because the patience of the retrograde has been uncomfortable. Mars direct is fastest when it is not panicked, and the week after the station is often better spent consolidating than launching.
The simple rule
Ask what the retrograde made impossible to ignore, and take its first real step. Mars direct rewards the action that carries its correction with it.