I'm an engineer who occasionally project manages. At first I felt like I was doing a terrible job because I wasn't in there helping make all the decisions and being the hub for the spokes to communicate through. Every project I'd feel like I wasn't doing enough (luckily laziness won out over my fear of not doing enough) but every time the project would get done.

I still don't particularly like project management but I'm learning to enjoy the feeling of not doing enough, at least on internally facing projects.