Several techniques can help build confidence in candidates during UPSC interviews. Practicing mock interviews with peers or mentors allows aspirants to simulate the interview experience and receive constructive feedback. Visualization techniques can also be beneficial, enabling candidates to imagine themselves successfully navigating the interview. Familiarity with common questions, current affairs, and personal achievements boosts preparation. Additionally, focusing on body language and communication skills during practice enhances overall presentation. Ultimately, preparation coupled with a positive mindset creates a confidence-boosting environment that helps candidates make a strong impression during interviews.