The liberal arts education you've just received gives you tools to gain new knowledge. You'll gain most of the knowledge you need for the job, on the job. Now, here comes the hard part. Knowledge isn't nearly enough. You also need some wisdom.
Wisdom is different from knowledge.
Knowledge is knowing how to accomplish something. But wisdom is knowing why you should. Wisdom involves values. It entails judgments about what's important or worthy for you to be doing. Wisdom requires self-knowledge.