“To thine own self, be true.”
It is always wiser to under-promise and over-deliver…than the opposite.
Whether you’re making a commitment to a client, an employee, a family member, or even to yourself, make sure you’re extremely honest and that the promise you make is the “bottom floor” of what you will accomplish.
So, instead of committing to lose 50 pounds or promising to run a mile every day, make the promise that you’ll lose 5 pounds or walk a block every morning.
You can always exceed the promise and no one (including you) will object.