Azizi, I am so sorry to hear about your twin. I too lost a sister - my sister's identical twin. You're absolutely right about the relative influence of nurture, environment and free will. Thank you so much for sharing your story here.

But -complicating this-I don't believe that individuals come to life as a blank slate. IMO, what happened in past lifes also impacts this life. Astrological placements may or may not signify this...

Blank slates? I think not. And yes -- Saturn's placement, pre-natal eclipses, the Nodes of the moon, even certain of the *fixed stars* are often cited as "karmic indicators" (ie the influence of other incarnations). If the astrological "map" (so to speak) is interpreted correctly - a task which most unfortunately requires nothing less than a lifetime (or several) of study.