Do not compare.
Children should always be educated not to keep up with the competition with classmates and peers, not to eat and wear, not to have money, not to make progress and not to have ambitions. Learning is the most important thing. Students are not particular about food and clothing. Good study, good habits and good quality are really good and should be compared.
Control pocket money
No matter how rich you are, don't give your children too much pocket money, just give them. Moreover, we should guide children to know how to spend pocket money, buy more school supplies, books, etc., and don't spend all their money on eating, drinking and having fun.
Spend money in a planned way
Things that need to be bought are gone, and things that are expensive are gone, and things that are not needed are not bought at low prices. It is a waste of money to buy useless things. To educate children to make good use of pocket money in a planned way, you can prepare a bookkeeping book to record how you spend the money. Parents can also follow the guidance.