Opportunity is not fair, even or rationale at times.  Opportunity is real, can take time, will be worth the effort and rewarding.

What one measures as opportunity is to oneself. It can be class president, financial gains, or a relationship.  Or a world of other opportunities as one decides.

The manner in which we use opportunity can dramatically factor in how to measure it's success.  Did working, planning, waiting, earn  it or was it given to us. These factors help us in building on other opportunites.

Believe in failure.  It is good and needed.