positive and negative

How many of you can think of situations where something negative can be turned into something positive? Hee we are at good friday,and the murder of Jesus on this day is refered to as a good day. Of course this is true, but can you imagine being there on that day, could you think of what was happening as good? Are there things today, in our lives, or in our work, that we think are bad, tough or wrong, but yet, they just might be good?