Completely disregard my last post if you read it!! I totally misread it (as 'opportunities that blow you away') Sorry!
Things that 'blow your way' are things that you encounter, sometimes completely randomly (like something blowing in the wind in your direction).
So an 'opportunity that blows your way' is an opportunity that you will encounter at some point, maybe even when you're not looking for such opportunities.
(not a teacher, just a language lover)
Student or Learner