Selective colleges like Yale will be interested in your ability to influence others or your attainment of some vaunted talent. Your ability to influence others will be directly related to frankly, your charisma and genuine concern for others’ well-being. Stating that you plan on being valedictorian and plan on being a leader of NHS and plan on doing volunteer work as a 12th grader – seems pretty mercenary.
Are you really a leader? How likable are you? How to gauge this? Do people follow you? If not, then not.
The answer to your question: it’s EXTREMELY difficult for #1. The same level of difficulty for #2 or #3 or down the line. Your narrow focus on besting your peers seems to be a pretty nasty strategy, frankly.