Choose a realistic amount for non-essential flexible spending and check it during the week.
Quick action: 5 minutes · Recurring
Why it can help
A weekly number can be easier to use than a vague intention to “spend less”.
How to try it
Look at what is genuinely available after essentials and commitments, then choose a flexible amount you can live with.
Things to consider
An unrealistic limit tends to fail. Adjust it rather than treating one overspend as a reason to abandon the plan.