Big Decision by Elliott Smith tackles themes of internal conflict, emotional turmoil, and the complexity of making life-altering choices. Smith's lyrics often delve into personal vulnerability and the consequences that come with difficult decisions. The song explores the struggle between following one's own path and the expectations of others, highlighting the weight and significance of these decisions in one's life. Key poignant moments include the introspective questioning and the emotional depth that Smith brings to his self-reflection, resonating with listeners who have faced similarly challenging decisions.