The short answer
A good income creates capacity, but it does not create a system. Money can still disappear into fixed commitments, irregular costs, lifestyle changes and decisions made one at a time. Start by looking at the whole year, not one ideal month.
Salary is only one part of financial wellbeing. The other part is what that income is already expected to carry.
Mortgage or rent, childcare, debt repayments, insurance, travel, family support, subscriptions and annual bills can absorb far more than the day-to-day bank balance suggests. Then the spending that is technically optional may be doing a real job: buying time, reducing pressure or making an overloaded week easier.
That is why a strict monthly budget often produces the wrong conclusion. It can make you feel careless when the real issue is that the plan has not included the full cost of your life.
A better first look
Be curious, not critical. The pattern is information.
If there is genuinely very little room after essentials, this is not a motivation problem. The next step may be to review the largest commitments, income options or support available rather than trying to optimise every small purchase.