"I don't know what my next steps are to regain a slightly improved confidence in such situations."
I know how you feel. I was car jacked in front of my house. I had a Buck Mayo in my pocket, but did not use it. I luckily got off unhurt, out $60 cash, $80 to change my locks and got my car back in two hours...thanks Mr. Policeman.
The only thing that works is time. It took at least 3 months before I would walk the dog but not keep my house in sight if someone was still home (the dog is our burglar alarm and since he's 1/2 pitt bull he's also our weapon). Once I was out walking and a beat van turned the corner and the door flew open. I was ready for drive by action, heart pumping, dog on the short leash...it was only an old women whose door lock was broken

That foolishness helped me calm down.
What I did for "my head" was buy a custom Terzuola, the classic ATCF. I had it made for me by Bob. Just ordering it felt good, it took about 9 months to get it. I carry it for security not to use for protection. It's a mind calmer. It also has doubled in value in the last few years
I also carry my Matriarch a lot more often with another blade for regular use. I gave it away to a family memeber who wanted it, but was nervous not having it so the Matriarch was replaced. I also bought a Benchmade 530, Mel Pardue classic, a nice little stabber that is light and very unobtrusive. I've had a G10 Harpy for about 15 years and carry that as well, particularly when I did not have my Matriarch. The Harpy's curved blade with serrations is wicked for self defence, but the small size, curved blade and utilitarian purpose makes it legal in many places where dirks, daggers, or blades with an evil purpose are not allowed. I rarely go out w/o a knife that can be used to severly hurt someone, even if I have to carry two blades.
I don't really plan in using them for self-defense, but it gives confidence. If I'm on the ground being kicked and absolutely fear death, I'll do some damage before I go out
