Expectations, Not Great

In depression there is a disconnect somewhere among expectations, realities, and results. The would-be ballerina expects that she will be a dancer. Reality is that she has two left feet. The result is somewhat short of ballet.
The ballerina example is over simplified since depression goes on in some intangible zone of thought and emotions. So I might expect to weather the storm of a family visit, and the reality is that I survive it. Their departure, however, results in a let down. I do not know why; searching for that reason may not even be the key.
Depression is a foggy place where sharp edges and facile answers recede.