Lottery winners have a much harder problem than those with seven figure income. A lottery winner is usually getting a single big lump sum; if you spend too much, you don't get a second chance.

Someone with a large income probably grew their income over several years (although, if you know of any career paths with seven figure starting salaries...), and have had a chance to learn that even though it's a huge amount of money, it's not infinite money. But if you do overspend one year, you're likely getting a bunch of money the next year, so you can probably work it out.