In my view, and as it has been explained to me by my Lord Rama and my Spirit Guides, the only hard-external boundary in everyone's life cycle contract (I just coined that--it makes more sense to me than the term soul contract), is date of death (date, not how). People's contracts have varying other hard facts predetermined, by our souls' choosing with our gods' signoff, designed to see how we exercise our free will to navigate the obstacle course and learn life lessons.