Effective communication skills before the UPSC interview can be fostered through various methods. Candidates should practice mock interviews to simulate real-life scenarios and receive constructive feedback. Engaging in group discussions enhances clarity of thought and articulation. Additionally, reading diverse materials, including newspapers and literature, improves vocabulary and familiarity with current issues. Participating in public speaking clubs or workshops can also boost confidence and presentation skills. Consistent practice in these areas will prepare candidates to express their thoughts articulately during the interview.