Booking a trip just days before departure, with a suitcase still unpacked but the tickets already in hand, may seem spontaneous, but behavioral science suggests it reflects deeper personality traits. Some people meticulously plan their trips months in advance, using tools like Excel calendars to organize every detail. Others wait until the last moment, letting the urge to travel strike in the days or even hours before departure. This behavior can be linked to personality types, often categorized as Type A or Type B, and it speaks volumes about how individuals approach pleasure, uncertainty, and decision-making. One of the intriguing findings in the psychology of happiness is that the anticipation of a pleasurable experience can be nearly as enjoyable as the experience itself. Thomas Gilovich, a psychologist at Cornell University, has explored this phenomenon extensively. In a notable study with colleagues Amit Kumar and Matthew Killingsworth, participants were asked to reflect on upcoming experiential purchases, like a vacation, or material purchases, like a new gadget, to assess their emotional states during the waiting period. The research found that anticipating an experience, such as a trip, generates more happiness, excitement, and less impatience compared to anticipating a material purchase. In other words, the joy of looking forward to a vacation can be just as satisfying as the vacation itself. By booking at the last minute, individuals may miss out on this "pre-happiness" phase, which researchers consider as valuable as the actual experience. As one of the researchers notes, the anticipation of a delicious meal or a vacation feels entirely different from waiting for a simple package to arrive. Booking at the last minute is not just a matter of a busy schedule; it can also reveal deeper psychological tendencies. One such tendency is decisional procrastination, which researchers have studied extensively. A meta-analysis published in the journal Personality and Individual Differences examined various studies to identify common traits among procrastinators. Researchers linked these traits to the five major personality dimensions of the "Big Five" model: agreeableness, conscientiousness, extraversion, openness to experience, and emotional stability. The most common finding from these studies is that general procrastination is primarily linked to a lack of conscientiousness, a trait that includes organization, discipline, and the ability to plan for the future. Another study, published in the Archives on the American site PMC (National Institutes of Health), further distinguishes two different profiles: indecisive individuals, who tend to be more anxious and introverted, and general procrastinators, who are mainly characterized by this lack of conscientiousness. Indecision is associated with strong neuroticism and moderate introversion, while general procrastination is strongly connected to a lack of conscientiousness. In practical terms, booking at the last minute doesn't necessarily mean someone is spontaneous or carefree; it could also indicate a broader difficulty in planning, projecting into the future, or making decisions when faced with numerous options.