Opportunity Cost

In everything we do, there are choices to make and opportunity costs to bear. Sometimes and inevitably, as erring humans, we make the wrong decisions. And at other times, life's circumstances shape certain decisions that we can't choose or control. But we don't only bear consequences; we have to bear opportunity costs as well. With every decision made, there is an opportunity cost. And sadly, sometimes the opportunity costs counterbalance the effects of the decisions. No matter how carefully choices are considered before they are made, there exists an unknown element of "what if". So, how many wrong decisions have you made and what were the consequences and opportunity costs you had to bear?