Read, write and think.
Just because you have left school doesn’t mean you discard these.
Be a self respecting professional. Read up all the required reading in your line of work. Yeah, like required reading your professors lists for you. Even if you did not attend college (or uni), you should know the required reading list for your industry.
Having good oratorical skills does not mask your lack of intellect, the shallowness of your briefs and decks and your utter lack of writing skills.
Someone may call out your BS one day.