Spoon theory describes a visual metaphor for your daily energy capacity. It was coined by Christine Miserandino in 2003 to help others understand what it is like for her to have lupus. In this representation, you start your day with some number of spoons of energy, and you plan your activities so that by the end of the day you haven’t run out of spoons.
The important part of the message is that folks who are suffering from chronic illnesses have fewer spoons each day, or the consequences of running out of spoons are more dire for them, so they must be cautious and deliberate about their daily commitments.
But we all have spoons, and we can all manage them better.