Really depends on your status of living. I don't buy things I do not need, wait until things are on sale and use things until they are not feasible to be used anymore. Even helping one child pay for their college education my wife and I live on 55k a year. That is with going on multiple trips around the country each year.
Now I have friends in the same peer group (age, background, education, employment, etc...) who make 100k a year and live paycheck to paycheck with increasing debt each year. They are the ones that get new cars every other year. Get a preapproved for a home loan or auto loan and have to max it out.