The most effective way to grow is not to avoid difficulties, but to consciously make things more challenging for yourself. True skill improvement often comes from deliberately choosing challenges that are uncomfortable in the short term but yield long-term rewards, such as learning difficult skills, taking on high-uncertainty projects, delaying instant gratification, or entering more competitive environments. Because the brain and capability systems only evolve rapidly when pressure and feedback coexist, staying in the comfort zone means that even effort only repeats existing abilities rather than upgrading them. Therefore, "actively designing resistance" is essentially a self-investment strategy: exchanging manageable difficulties for irreplaceable growth, enabling oneself to better adapt and have more choices when facing more complex problems in the future.