Sun Conjunct Mars in Depth
Fusion of will and drive
Mars orbits outside Earth, so unlike Venus it can sit anywhere relative to your Sun. The conjunction fuses the part of you that decides with the part of you that acts, and removes the pause between them. Allow eight degrees, though under three degrees the effect is noticeably hotter.
Worth checking whether Mars is ahead of or behind the Sun in degree. Mars rising before the Sun in the sky, at an earlier degree, tends to describe someone whose action leads their intention. Mars trailing the Sun more often describes someone who decides first and then finds the energy, which is the marginally easier arrangement to live with.
What it feels like from the inside
There is no experience of summoning motivation. Wanting and doing are the same event. This is why people with this aspect are baffled by procrastination in others and are often unfair about it. It also means you have no natural brake. The thing most people call thinking it over, you experience as a delay that has to be imposed from outside by a calendar, a colleague, or a rule you made when calm.
Physically it tends to run warm. Many with this placement report needing hard exercise not as a hobby but as maintenance, and getting irritable within a few days of stopping. Heat also shows in speech patterns. People with this aspect tend to interrupt, finish sentences, and speak slightly faster than the room, and they are usually the last to notice they are doing it.
The anger question
Sun-Mars conjunctions are often described as angry. More precisely, anger here is fast and undisguised rather than large. It arrives immediately, is expressed immediately, and is usually gone within the hour while everyone else in the room is still recovering. The maturation task is not suppression, which tends to sour this aspect badly, but latency. Learning to insert thirty seconds, then a night, between the flare and the reply.
People who manage this well often end up in roles where decisiveness under pressure is the whole job. People who do not tend to accumulate a trail of burned relationships that they genuinely do not understand, because from the inside each incident was over quickly.
Cycles and timing
Transiting Mars conjuncts your natal Sun roughly every two years and stays in orb for about a week, longer if it stations retrograde nearby. Those weeks are reliably productive if aimed and reliably combustible if not. The simplest use is to schedule something physically demanding into them on purpose.
Across a lifetime the aspect tends to peak in intensity between the late teens and mid thirties, then convert into stamina rather than heat. The best version at fifty is someone who still starts things, just with fewer casualties.