This phrase is not a standard term in psychology, sociology, or library science. It may be a typo, a misinterpretation, or a very niche reference. However, I can offer guidance based on possible interpretations:

Where a "pro" Libra uses diplomacy to lead, the "desperate amateur" is paralyzed by a fear of making the wrong choice and hurting someone's feelings.

Please provide the (even a fragment), and I can help locate the paper. Otherwise, the above are the most likely helpful directions based on standard academic databases.

If we combine these concepts, "Libra desperate amateurs" might refer to individuals born under the Libra sign who find themselves in situations where they're acting out of a sense of urgency or desperation, possibly in their personal or professional lives, and are perhaps not fully equipped or experienced to handle these situations.