To better handle your expectations regarding adaptation, it's important to recognize that the excitement of buying a new car will fade over time. Anticipate that the initial thrill won't last, as the novelty diminishes after a month or two. Instead of obsessing over finding the perfect item, which can lead to unnecessary search costs, aim for a reasonable choice that fulfills your needs.
Additionally, shift your focus toward appreciating the positives of your choices rather than comparing them to their initial appeal. By reminding yourself of the good aspects and valuing your decisions, you can enhance your satisfaction and reduce feelings of disappointment over time, as highlighted in Barry Schwartz's "The Paradox of Choice."