Examination of the past not only provides you with a euphoric sense of both admiration, and sometimes, that of disgust. But it also manifest within it wisdom that, when utilized properly, can be of immense value and utility. This wisdom is not only discovered in past failure, but also in the most reverenced of times as well.
Generally speaking, you can discover the solution to problems within the failures, while at the same time rediscover joy, and that of a simpler pattern of being within the more memorable times. There is much wisdom to be discovered embedded within the past, and it is up to you to journey there to acquire it, both in the times of mourning and joy.