Achieving something does not guarantee that it fits into your life or that you can sustain it. Motivation and belief can push you to surpass limits, but effort, wear, and context determine the outcome. Reaching goals does not ensure comfort or enjoyment, and understanding this is not resignation, it is recognizing how reality works once you have accumulated experience.
Going with the flow is not passivity, it is acting within what is possible. Small adjustments are the only thing you control, and their impact depends on your ability to maintain them. Life moves with chance and limitations, and moving with it reduces wear and aligns expectations. You do not need to impose a narrative of success or failure, only respond to what comes and adapt to what you can sustain.