Interpreting astrological symbolism cannot predict character per se. It only suggests influences with many possible manifestations. Each placement and aspect in a birth chart can be read on the high side and the low side. It is my practice to always focus on the inherent higher potentials, but occasionally I am reminded to stay alert to the more negative possibilities.
That goes for interpreting current planetary transits (influences) happening for an individual as well. There are often both high and low manifestations at the same time, which sometimes may only be fully understood after the transit has passed.