1. Comparison of the plan and deviations (reality). A decision is made based on the results. A significant deviation is 5-10%.
2. Do not evaluate and criticize your expenses for the first month. You just need to develop a habit.
3. You can track in detail (milk, eggs, cottage cheese...), you can create a category "food" for this, or you can create only 2 categories: "mandatory" and "optional" expenses.
4. A list of things you would like to do in retirement (live by the sea...). How much do you need for this? This motivates you to save for retirement.
5. Planning methods:

5.1. Set aside for savings, for unforeseen expenses, and the rest of the money can be spent as desired;
5.2. Divide income into 6 parts: 55% - current expenses; 10% - investments; 10% - education; 10% - safety net and major purchases; 10% - entertainment; 5% - charity and gifts;
5.3. 20% - investments and savings; 50% - mandatory expenses (rent, loans, groceries, communication); 30% - lifestyle (restaurants, cosmetologist, nice to have, but not necessary);
5.4. 60% - current expenses; 10% - retirement; 10% - major purchases (apartment, car, even debts and loans); 10% - irregular expenses (just in case, like a cushion), 10% - entertainment