I am optimistic because October has a very strong seasonality history. Markets go higher from sometime in October almost always. We should have a bottom no later than mid-October and it could be sooner.
This wasn't the case for October 2007 which was the high before the sub prime crisis hit the market. One year later the market only rallied some from an October bottom before going to the great recession low.
October 2000 was the last short upward gasp before the dot com bust push the market south. The following October has a really nice rally to the 50 week moving average.