Change is the only permanent thing in this world and with everybody that passes, we don't notice just how much it affects until... one day... the people who know you best say "hindi na siya ung nakilala ko..."
It's true that we don't know what we've got until we lose it, but it's also true that we don't know what we've been missing until it arrives.
Life holds no promises to what will come our way. It makes no guarantees as to what we will have. It just gives us time to make choices and take chances.