Most code becomes hard to change long before it becomes technically “wrong.” The main failure is usually clarity. We hide intent behind clever names, abstract too early, and pack unrelated decisions into the same function. It works today, then turns expensive tomorrow.
Writing clear code starts before typing. I try to state the problem in one sentence: what input changes, what output matters, and what constraints are real. If I can’t say that plainly, the code will probably wander.
Naming is the next pressure point. A name should explain purpose, not implementation trivia. retryPayment says more than handlePaymentV2. I also prefer fewer layers when the problem is still small. Extra indirection can look “architected” while making simple behavior harder to follow.
I treat each file as an argument to a future reader: this is what the system does, and this is why. That means keeping functions short enough to scan, grouping related logic, and deleting dead paths quickly. Comments are useful when they explain non-obvious constraints, not when they restate code.
Clear thinking also means honest tradeoffs. Sometimes duplication is cheaper than a premature abstraction. Sometimes a straightforward loop is better than a compact one-liner. The goal is not minimal lines. The goal is minimal confusion.
When clarity is the standard, maintenance gets faster, reviews get calmer, and bugs become easier to isolate because the code says what it means.