The sources are a series of comments and responses on a YouTube video about reinventing your life in four months. Cal Newport, a self-help author and productivity expert, presents a structured method that involves defining core values, creating a personal code, and establishing a series of keystone habits. While many viewers comment on the usefulness of Newport's advice, others express skepticism about the ease of implementation and raise concerns about the potential for procrastination. Some viewers also share their own experiences with depression, highlighting the challenges of applying Newport's approach in the face of mental health struggles.

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