The Sword of Damocles is suspended by a single thread (of DNA)

Have you ever started a chain of events in motion that could either be wonderful, or on the other hand, like being immobilised and made to watch a car crash you'd orchestrated yourself?
That is how I feel today, having sent a DNA sample off for autosomal testing. My journey to find my ancestors has been fraught with obstacles since the beginning, and the people I have found in my family tree feel hard won already. I feel a connection to some of them, which strengthened as I've found details about their lives. And now I'm half dreading something on the test leading me in a different direction. All it takes is one infidelity and those names you have started to cherish on a branch of your family tree, may not be yours any more.
On the upside I could find a new connection to common relatives on a side of my tree that is a total unknown.
Strange and unsettling time. All I can do is hope the results are worth the worry.