The energy has to be refined into something else of a competitive nature (like doing a sport or entering competitions) or something that lets you channel the aggression constructively (like being a reporter or detective, someone who finds things out and lays out the facts). If you have Mars as a Ruler, with it in the powerful 8th basically acting as an anchor for Mercury (aggressive communication colored by Mars) and Venus (sense of others being tempered by the Mars), that can produce anything like this easily, and with the 8th it can have a fixed kind of quality to it.
You can also try to funnel the Mars energy into Venus-like things (winning at girlier matters, gaining important relationships that help you) or Mercury-like things too. You can also do Moon and Venus mantras to help with this for balance, feminine seed mantras like shrim, more feminine Runes like Berkano or meditate on female Demons for advice.
But this can also be a powerful configuration for justice and staying power in terms of your energy level. You could be an adept in Black Magick. More safely than this, you can do targeted FRTRs for all kinds of purposes like imagining the enemy's letters dying out and dissipating on one of their 'holidays', for example, as Venus and Mercury tied to Mars lets one be imaginative more easily in areas like this. Letting out aggression by destroying the enemy can help :twisted: