In fact, women can manage the financial power of the family every month, so that women will know that the consumption in life is not cheap when dealing with daily necessities. Moreover, if the monthly income cannot make ends meet, women will realize that it is not easy to support their families, so women will gradually give up the problem of unrestrained consumption.
Girls, the correct concept of consumption is, don't live too frugally, don't wronged yourself, don't be extravagant, know what you are suitable for and what you need, and plan your income reasonably.
First of all, your sister's deposit must be half of her monthly salary (as for 20% and 30%, consider it yourself) and put it on another card (don't open online banking, pay it quickly, or it will be spent), or let the bank help you deposit it (time deposit, take it if you want, interest and so on … that's it, mainly to save money. Skin care products, such as physical stores and counters, Taobao is also risky, so there is no need to take risks to save money.
If your sister can't cook, let her learn to cook, which will save a lot of money. You can eat out occasionally, but don't write it down roughly every day (it doesn't matter if you go to 1-2 times a week). You can't be precise about anything, but you must know exactly what kind of money you spent. If possible, you'd better leave invoices and receipts for bookkeeping.
If your sister has been shopping with a credit card, it is very bad to get rid of this habit (installment payment may bring you a lot of convenience, but you actually spend unnecessary money every month). Don't leave too much cash in your hand, and you can't put too much money on WeChat, which is very effective for people with poor self-control.