I became the LPN supervisor, so now I direct the aides and answer to administration for how the floor runs. But I'm still capped right where I always was, below the RNs who can do things I'm not allowed to, no matter how many years I've got. I took on more responsibility and hit the very same ceiling I've always been under.
More people experience this than they realize.
You took on supervising and still sit under the same ceiling you always have.
If this sounds familiar, the Library can help you find the bigger picture.