Under promise, over-deliver. If you don’t know by now, hopefully, the rock you were living under was at least a fancy one.
The problem with this piece of advice is this. Some people are natural over deliverers. Some people have an innate desire to please other people. For those people, too much of a good thing is never enough.
Sometimes the extent to which people-pleasers over-deliver knows no limits. Handing out gifts (without charging) to their clients as Oprah Winfrey did with her audience.
Under promise, over-deliver is forever a solid business principle. However, if overdelivering is in your DNA, ask a third party to run a check. They should establish whether you’re overdelivering or straight-up selling yourself short.