The mind is like a sheet of white paper in this, that the impressions it receives the oftenest, and retains the longest, are black ones.
The interval between a cold expectation and a warm desire may be filled by expectations of varying degrees of warmth or by desires of varying degrees of coldness.
Do you know, that is the root of the whole trouble - has been one of the roots at any rate - is people hearing things and then imagining some more and magnifying it and multiplying it.