Effective ways to deal with feedback during UPSC preparation involve maintaining an open mindset and viewing feedback as a growth opportunity. Candidates should actively seek feedback from mentors or peers on practice tests and answer writing. Analyzing critiques helps in identifying weak areas and making necessary adjustments. Reflecting on feedback by updating study strategies and integrating constructive criticism into learning routines is vital. Developing resilience through regular practice and not taking criticism personally enhances the ability to improve continuously, leading to better performance in the examination.