some things to consider when dealing with astrology...
1. there's a lot of fake astrology stuff floating around, so it's easy to generalize about the entire field of astrology and say the whole thing is bogus, but that would be untrue.
2. as human beings we are affected mentally, emotionally, and physically by the movement and placement of celestial bodies, and there are several concrete examples demonstrating this. the only debate is to what degree are we affected.
3. an important thing to understand about astrology is that it measures PROBABILITIES. there's obviously a huge different between probable and inevitable, so people have to level their expectations when it comes to determining outcomes. especially when human free will is the x factor that ultimately decides which outcome will manifest.
4. another important thing to understand is astrology deals in archetypal energy. archetypal energy is a primal form of energy that manifests itself in a multitude of ways. for example, the archetypal energy in play may deal with abundance, but that abundance will manifest itself differently for different people, and thus create different outcomes. the outcome will be specific to that person, their individual situation, and the individual choices they've made.
5. you really have to be careful when dealing with astrology and birthdays because of the way calendars have been modified over the centuries. there are many different systems one can use to study astrology, and all of them don't use the same metrics. also, as you go back in the study of astrology there's a lot of symbolism and esoteric references, which can add in the confusion. there are also many aspects of astrology that were adapted and modified as it moved from culture to culture. im sayin all that to say, just be careful and thorough in your study of the individual systems of astrology, and study their history and the trajectory of where they came from.
6. if you haven't in some way studied the authentic form of astrology, then you should wait to form a solid opinion.