The natives of all signs should beware overconfidence, especially as they move into new projects. .
Children of Aries should be particularly careful on this day, as they often have issues with charging into things too quickly, and this tendency will be even stronger today. If it is any consolation others are likely to have more enthusiasm and confidence than usual, so you should be able to more trusting as you work with others, or hand batons off to colleagues.
Taureans are often comfortable working alone, but a surfeit of self-confidence can still be damaging. Natives of this sign are often able to reliably do large volumes of work, and often have very regimented systems that allow them to do so. Over-confidence in your work and these systems could lead to large volumes of work having a consistent error, should your work go unchecked.
Children of Gemini are not likely threatened by a narrow moon in Aries. Being one of the most social signs, you often have "accidental support systems" in the form of networks of friends who likely know what you are up to, and are likely to dissuade you from doing anything too brash.
Cancerians would be wise to listen to or seek the advice of family and friends. While today you may be very sure of yourselves, people who are close to you should be listened to when they offer criticisms and suggestions, as they know you best, and care about your success.
Children of Leo often think of themselves as very important, intelligent, and powerful people, which can make them somewhat condescending and disinterested in the advice of others. While not all advice is valuable, all of it is worth hearing.
Virgoans are not in great danger of a moon in Aries, as they are often not team players and are usually too concerned with details to let anything get by them, even when they feel the most self-confident - a feeling which is not unnatural to them. Do be aware, however, that if there are mistakes in your work, others are not likely to catch them.
Librans will likely have a difficult day. There are likely to be disputes arising from aggression over unwarranted guidance. Because giving unwarranted guidance is much of the interaction that Librans do on a given day, it may be wise to turn to your own work today, unless your view is explicitly requested.
Children of Scorpio should carefully consider who they lash out at today. You are likely to take at least slight offense from people offering advice when you don't need it or you think that they are unqualified to give it. At an individual's first offense, consider thanking them for their input, but assuring them that you know what you are doing. Anyone who puts their nose too far into your business too often likely deserves to be stung.
Sagittarians are not in particular danger of a slim moon in Aries, as they are often qualified to continue work alone and with certainty, and are also usually not hostile to hearing another's point of view on anything. If they do get tired of hearing everyone else's input, no one knows how to hide like a Sagittarian.
Natives of Capricorn should beware of their self-perception, not because it may lead them to take on over-large projects, but because it may lead them to get a little too chummy with authority figures, which could be dangerous to their images.
While other signs often need to beware the assertive nature of Aquarius, today the opposite may be true. Aquarians often try to impose their thoughts and views on others, but today others are likely less necessary to put up with this behavior.
Children of Pisces should not communicate unnecessarily, but should not be afraid to communicate when it is required. Due to the nature of this sign and the way that it interacts with others it is the sign that is least likely to upset another sign by offering constructive comments, but the other signs will only be so receptive.