Offer your insights or judgment on the input financial query or topic using your financial expertise. Reply as normal question answering

How to prevent myself from buying things I don't want
To me, your question emphasizes something I've heard many times before: personal finance is as much or more about behavior than it is about mathematics or "head knowledge".  Sure, you know you shouldn't be wasting a lot of money on something you will use very infrequently, but how do you make this behavior stick?  Here are a few tricks that might help: The other aspects of your question really touch more on psychology than finance.  But getting yourself into a discipline habit with money will help.  And realizing the full cash price of items in relation to how much your disposable income is will help you get control of your impulses, as you review your budget monthly, and keep limit yourself using the envelope system.  But honestly, everybody wants stuff they don't have, it's human nature.  The key is finding ways to put physical limits and guards on yourself to keep you from obeying the self-destructive impulses.