If you have money, buy nice clothes and a nice car, but keep your diet as simple as possible. Eat only a little of what tastes good; control your cravings, as overnutrition shortens your lifespan. As the saying goes, "Dietary restriction prevents disease, and eating less prolongs life." True health preservation boils down to one principle: simplicity is the ultimate sophistication. Remember, don't eat too well, and don't overeat. Nowadays, people's material living standards are constantly improving, and many people invest their money in food rather than other things, which is a big mistake. Don't think that eating well puts a greater burden on your digestive system. Look at truly long-lived people; very few of them lived to 100 years old by "supplements." Their common traits are often very simple: simple diet, regular meals, and eating until they are only 70-80% full. A light diet is not poverty, but a composure that comes from long-term self-discipline. Eating is the lowest-cost form of pleasure, but also the easiest to abuse. True sophistication is having the means to eat richly, but choosing to eat with restraint. Focus on enjoyment in the spirit, experience, and freedom, rather than piling food into your stomach. Depriving yourself of certain foods isn't about forcing yourself; it's about nurturing your long-term self. True health preservation is never complicated; the greatest truths are simple—don't eat too well, don't eat too much.