I've run these lines safely for decades, and the vigilance the cab demands has made me very good at a very lonely job. Hour after hour it's just me, the track, and the watching. Somewhere along the way that same solitary focus that made me a master quietly kept me apart from nearly everyone.
More people experience this than they realize.
The solitary focus that made you a master has kept you apart from people.
If this sounds familiar, the Library can help you find the bigger picture.