However the things that make us grow as people may not be exclusively from bad things happening in our lives, they may be also from difficult times that we have chosen to endure.
Difficult things we endure are things like the research associated with doing a PhD or getting some other degree, paying out a mortgage, raising a family in difficult circumstances, travelling or even moving to a foreign country, who knows... whatever mountain you have chosen to climb, whatever burden you have chosen to shoulder, knowing that you would endure, knowing that one day things would get better, and then finally waking up one day knowing you have prevailed.
It is choosing to do which is hard that makes us into great human beings. The determination to do whatever it was we set out to achieve and realizing that goal.
This is how we leave our mark.