How can I guide and support my younger sibling during his college placement season? While many of his peers are already getting placed in companies, my sibling is taking a bit longer. Sometimes this makes him feel discouraged because of peer pressure and the competitive environment. How should I motivate him, help him stay confident, and guide him in improving his preparation without losing hope🤔?

Your understanding and being with him is itself a big support. We may not be always able to change outer circumstances the way we wish but we can always help by being a pillar of support. 

However it is helpful to understand what are his areas of interest, his natural temperament, his strong points and weaknesses. By becoming conscious of these, he can improve the chances of finding the right place meant for him rather than toeing the common line of that everybody is taking.