𝗧𝗵𝗲 𝗯𝗶𝗴𝗴𝗲𝘀𝘁 𝗳𝗿𝗼𝗻𝘁𝗲𝗻𝗱 𝗹𝗲𝘀𝘀𝗼𝗻 𝗜 𝗹𝗲𝗮𝗿𝗻𝗲𝗱 𝘁𝗵𝗲 𝗵𝗮𝗿𝗱 𝘄𝗮𝘆:

Not every piece of data needs to live in state.
Early on, I put everything in useState — derived values, computed totals, filtered lists. My components re-rendered constantly, and debugging felt like chasing ghosts.

The fix wasn't a new library. It was a mindset shift:

→ If a value can be calculated from existing state or props, calculate it — don't store it. → If it only matters inside one function, keep it local — don't lift it. → If it doesn't affect what the user sees, it probably doesn't belong in state at all.

State should represent the minimum information needed to describe your UI at any moment. Everything else is just derived noise.
Since internalizing this, my components got smaller, my re-renders dropped, and — more importantly — my code became easier to reason about six months later.

Frontend development isn't just about making things work. It's about making them work in a way that your future self (or teammate) can understand at 2 AM during a production bug.

What's a "simple" concept that took you way too long to truly get? Drop it below — always curious what clicked for others. 👇

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