Although this is very simple, it’s not as easy as it seems.
Go 24 hours without complaining about anything; not only to others, but to yourself.
Do not complain about politics, the weather, bad drivers, inconsiderate people, high prices, or traffic. Do not disparage customers, clerks, or those with opposing views. Do not think negative thoughts about co-workers, friends, or family.
Most importantly, do not berate yourself for where you are in life or where have you yet to go. Do not put yourself down for your mistakes, your accomplishment, or your appearance.
If you really want to “push” yourself, each time you feel the urge to be negative, find a way to be grateful instead.
Try it for one day.