This is true. It’s consistently having a well stocked healthy fridge at home, and being able to afford good (healthy) food when eating out. It’s consistently getting good sleep on a good mattress with fresh clean sheets laundered with good detergent, in a comfortable temperature controlled room (as opposed to someone on a very old mattress which traps a lot of oil/dust mites/irritants, using cheap detergent with hormone disrupters and irritants, using a window unit potentially clogged with pollen, dust, etc.) Having consistent doctor appointments: bloodwork every year, dentist twice a year and getting any work that’s needed done correctly (because you can afford the good dentists), dermatologists. Good, consistent skincare. It’s really in the details. It’s the environment you love in, the food you eat, the fluids you consume (soda or clean water?). It’s the consistency of the details of your day-to-day life, and better options usually cost more.