Sometimes we also have to lose what we have in order to understand what we had in the first place. Everything happens for a reason- whether or not we understand what those reasons are at that point in time.
Most of the time, in times of loss we also gain much too. We gain an opportunity to obtain a higher understanding of ourselves.. as well as better possible circumstances (so long as we take effort in looking out for it). Many times, we become too consumed in our loss, or too focused on "our" plan that we forget we are never really quite the one whose in control.