I always have great difficulty in understanding what Shabbos Nachamu is about.  I understand that it is supposed to be a time to find comfort and consolation after being so focused on tragedy throughout the past 3 weeks, 9 days, and Tisha BeAv; I appreciate the need for a more fun, positive, upbeat time, after the long focus on sadness.  But what really is the source of our comfort?  It cannot simply be that we just forget about all the bad stuff from long ago in our history; we do buy into the centrality of the Beis HaMikdash; we still feel that we are now missing so much.  We believe that all of the suffering throughout our history is a result of the fact that God stepped back from our destiny at the time of the churban.  So what is it that gives us nechama, comfort and solace?  How do we really come to terms with this in a real way?