Completely agree with Rebecca's comment.
Buying cars new and driving them for 10+ years is cheaper than buying a 5-year old car and replacing it when it's 10 years old (https://medium.com/makingofamillionaire/why-buying-a-new-car-makes-more-sense-than-buying-used-daa988908df or see an update here: https://themakingofamillionaire.com/can-buying-your-next-car-new-actually-save-you-money-6803b8774fe8).
Bottled water: The wealthy don't see spending a few bucks on a bottle of water as expensive or wasteful. They may or may not care about the environment, just like any other large group of people. Those who don't see it as an important cause will buy bottled water when it's convenient.
Impulse-buying clothes or shoes: It depends. If they don't, it's not because it's expensive. If you're really wealthy, dropping a thousand bucks on clothes because you feel like it isn't a problem.
Eating out regularly: The wealthy don't consider the expense a major consideration here. If they feel like it, they go out. If they feel like eating in, they do that. That's one of the big benefits of wealth. Freedom of choice.
Expensive clutter: Again, the expense isn't the consideration. The reason they may not buy it is because they don't feel the urge. They have nice things at home already, so they're less likely to buy more. However, if they feel like it, they will.
Gym memberships: If you're wealthy, spending an extra $1000 or $3000 a year on a gym membership, or $50,000 on a club membership isn't a hardship (which you pick depends on how wealthy you are and how important it is for you to be around other wealthy people).
Paying minimum on credit cards: Yup. No argument here. If you're wealthy, the only reasons to use cards is convenience and possibly the free perks. No need to throw away money on interest when you have no problem paying off the full amount.
Paying full price: That depends. The wealthy don't waste their vaulable time on couponing or finding the best possible deal on small stuff. And if you're truly wealthy, a $100 purchase is small stuff.
Paying to file taxes: Sorry. You're totally off-base here. The wealthy usually have complicated tax situations, and a good accountant will make sure everything is done to the letter of the law, while reducing tax liabilities.
Store brands: The wealthy don't care if a box of cereal costs $2 or $5. They don't care if a box of tissues costs $1.50 or $3.50. They decide what brands they like and buy those. If those are store brands, fine. If not, that's fine too.
In short, the people who (would do well to) avoid many of these items aren't the wealthy. It's those who are not wealthy and want to become such.
