According to search tactics, how should customization energy be distributed across potential job roles?

Focus customization energy deeply only on the top three to five roles that generate the most excitement.

The demands of deep customization for every single job application are emotionally and cognitively exhausting for someone managing depression, making it an unsustainable strategy. Instead of spreading effort thinly across many applications, the approach should be highly selective. Energy should be concentrated heavily on tailoring the top three to five roles that align most closely with the individual's interests and perceived energy levels. For all other applications that are still worth pursuing, the effort should be minimal: rely on a robust, adaptable core resume and limit customization solely to minor adjustments in the summary or objective statement.