Aspirants with a non-humanities background can succeed in UPSC exams by focusing on building a solid understanding of the syllabus, despite their initial disadvantages. They should emphasize foundational concepts in General Studies, particularly current affairs and Indian polity, that align with the UPSC requirements. Engaging with study materials like NCERT books can make abstract concepts more comprehensible. Additionally, investing time in optional subjects where they feel more competent can leverage their strengths. Joining study groups for support and peer learning further enhances their chances of success, along with smart time management strategies.