Me too. And one of the reasons I actually didn’t try and get rid of all the reflectors in the back like a lot of people do. Or go with puny-ass little signals.
And any time I come to a stop, I am checking my mirror. I have my right mirror set up to see pretty much the lane behind me. If I’m passing or anything that involves needing to see a lane to the right, I turn my head like blind spot searching, because my right mirror is set to see what is exactly behind me so I know if some moron is riding up on me at a light.
I think never ever letting your guard down and planning the worst case scenario for everything you see occuring helps a lot. If you’re just out riding mindlessly or even above your skill level, you will get clobbered.