Much wisdom is here, I would challenge others though that there will always be aspects of life you are not in control of - you're only in control of your response to them. But there are other things which are fruit of the seeds you sow - and those we must sow with great care and diligence, ensuring we fertilize them appropriately.
But great article.

I found you today because @chekohler featured you in the Pay it Forward Curation contest. Keep up the great work!