The thing you wanted may solve a different problem from the one you have.

Wanting arrives before diagnosis. You settle on an object, and only afterwards work backwards to the reason, which means the reason is often invented to fit. The new bike answers a wish to feel a certain way; the actual problem may be that your evenings are empty or your work has gone flat. Buying the thing does not fail exactly, it just leaves the real difficulty untouched and now slightly harder to see.

When you find yourself set on something, write down what will be different once you have it. If the answer is about a feeling rather than a task, look for that feeling’s actual source before you spend.