By the hard skills standard, thirty years on the job earns you a presumption of competence at whatever the specialty is. BA, MBA, PCE, PMP, licenses and certificates. They all open gates because we take them as proof the holder is good at stuff.
Now we can place that person, and make assumptions about how much he or she matters.
While the tangible proofs of professional ability often are the objects of intense personal pride, they also have the aura of objectivity as you present yourself to the world. They are the currency of value in the competency marketplace.
But “soft” skills, conversely, are private and local, not easy to specify on the resume: “Excellent communicator – strong team worker – known as problem solver. . . .”
You talking about yourself? Yuck. Doesn’t work, not at all.