How many times have you forgotten to return a phone call? Or to bring home a carton of milk? Failures to remember actions that you intend to perform later on are called lapses in prospective memory. For most people they're merely annoying. For some professionals, they can be life threatening
Serious cases of this sort of forgetting may make the news. Like when a doctor forgets to take a forceps out of a patient during an operation, and the patient comes back weeks later complaining of pain. Or when an airplane pilot is interrupted during a safety check and afterwards forgets to perform it, leading to a plane crash. Most everyday cases aren't so serious, but they do add a lot of unpleasantness to people's lives.
Don't plan on fixing that leaky faucet sometime soon; plan on fixing it Saturday at noon.
An isolated incident of "Honey, I forgot the milk" probably won't put too much stress on a marriage. Do it over and over and it can be more toxic to a marriage than having cold feet in bed is. Forgetting to return an occasional phone call can be forgiven. Doing it routinely is extremely annoying. It can cost you friends and career opportunities.
The most useful one for professionals, such as doctors and airplane pilots, is to use a checklist, checking off each step as it's done. For the rest of us, there are other helpful approaches.
An article reviewing prospective memory problems and describing solutions to them appears in Current Directions in Psychological Science.