What's actually happening
Mars takes roughly two years to complete one circuit of the zodiac, spending an average of six to seven weeks in each sign during direct motion. Libra is a cardinal air sign ruled by Venus — Mars's traditional counterpart. Mars is said to be in its detriment in Libra, the sign opposite Aries.
What the tradition makes of it
Mars in Libra is the planet of assertion and direct action in the sign of balance and consideration. The classical detriment reflects genuine tension: Mars acts; Libra weighs. The combination produces a more diplomatic, more hesitant, and more aesthetically concerned form of drive — which in certain contexts is exactly what is needed.
The tradition notes that Mars in Libra fights for fairness. The anger here is often righteous — activated by injustice, by the imbalance that cannot be tolerated, by the situation in which one party has received less than they deserve. This is a real and sometimes noble motivation.
The shadow is the indecision that the Libra influence brings to Mars's natural need for decisive action. The desire to be fair can become a reason not to move at all.
How to actually use it
Identify what you are actually fighting for, and name it as a principle rather than a preference. Mars in Libra responds to justice as a motivator more reliably than it responds to desire.
The practice is to decide once, decisively, after the consideration — and then to move.
When in doubt
What would be fair here — and are you willing to act on that, even if it costs you?