Mastering Particle Nuance in Real-World Contexts

I've been trying to incorporate more natural phrasing into my studies. While I strive to use particles correctly, I often find the subtle differences between 'ni' and 'de' tricky when discussing topics like career success. It is one thing to read a rule, but another to apply it to real-life scenarios. Does anyone have advice on mastering these distinctions through specific, practical examples?