If this sextile sits in your natal chart, the first thing you know about it is that you know nothing in particular about it. That, in fact, is the whole character of Venus sextile Mars: it doesn't hurt, doesn't push, doesn't demand a choice and doesn't stand out as a theme of your life. It simply lies quietly between two planets that, for most people, are at least mildly at odds, and gives them an agreement instead.
Venus governs what you like, what you're drawn to without reasoning it out, your way of making warmth and of being attractive. Mars is your will, your impulse to take what you want, your capacity to begin. In most people those two functions live in a small but constant tension: you want something and you're afraid to take the first step; you like someone and you can't find the energy to walk over; you desire, and in the same breath you judge yourself for desiring. The sextile switches off almost all of that inner war. Not entirely — it isn't a trine, it doesn't run on its own — but it lifts away most of the noise.
On an everyday level it looks like this. You like a person, and you can walk over. You want to make something with your hands, and your hands cooperate. You feel desire, and the body answers without a lag. It sounds simple, but if you talk to friends who have Venus and Mars in a square or an opposition, you'll realise how rare a piece of basic kit it actually is.
I often notice in consultations that the people who carry Venus sextile Mars don't value the resource themselves. They grew up with it; to them it's natural that liking and acting pull the same way, and they don't register that for other people it's different. So the sextile frequently stays underlived — not because it gets in the way, but because it never draws attention to itself.
There's a flip side to all that softness. The aspect doesn't shove you in the back, which means a person with a sextile can spend years living a notch below their potential and never understand why. They have the taste, the initiative, the sexuality and the creative energy, but all of it only works when they decide to use it. No crisis turns up to force the issue. No partner arrives to provoke it. No illness twists their arm. Just quiet, and your own choice to do it or not.
I usually put it this way in the work: a sextile is more like a fishing rod than a fish. A trine hands you the fish; a square teaches you to fish through hunger; an opposition teaches you through the mirror of another person. A sextile lays the rod down beside you and says nothing at all. So the most common mistake people with this aspect make is to wait for life to call them. It won't. Life simply, quietly, approves whatever you choose.
If you recognise yourself in this — even relationships, an even career, an even mood, and underneath it a vague sense that you could do more — look at your Venus and your Mars. It often turns out that this sextile sits between them, waiting for you to start using it at last.
How to start using it is a separate conversation. I usually suggest three plain practices: meet new people more often than seems necessary; try the creative thing you actually want to try, without the precondition that you'll be good at it; and don't postpone the moment you want to reach out, to hold, to say it. Each of those habits gradually wakes the aspect and shifts it from a background resource to an active one. After that come changes that weren't there before — not loud ones, but steady. The sign the planets sit in, the houses they fall in and their aspects to Saturn and Jupiter all colour how that plays out, so the picture has to be read as a whole.