The speaker describes the intense military training experiences that taught him resilience and endurance. Crawling through hills in the rain at night with a gun, enduring discomfort and torture, running at 4.30 in the morning, and facing physical challenges like climbing in and out of tanks repeatedly were part of his military training. These experiences taught him the value of enduring pain and discomfort, making him realize the importance of confronting resistance and avoiding seeking constant comfort. The speaker believes that enduring such hardships made him stronger and more capable of dealing with challenges, enabling him to view the world differently without complaining about trivial issues. The military training and weightlifting he underwent during his one-year service shaped his mindset, emphasizing the value of perseverance and hard work in building resilience.