With small pleasures we don’t experience a very intense sensation that during the contact between the desire and the pleasure, the two immediately put each other out. They both disappear and are annulled. But in great pleasures, when a person aspires very strongly and dreams about them for a long time, or in special pleasures such as sex or sophisticated artistry, a person immediately feels that the pleasure comes for a fraction of a second and then disappears.
And we ask: Why?! It’s because the egoistic desire and pleasure are initially not intended to exist one inside the other. The will to enjoy cannot hold pleasure inside of itself. The two are opposite by nature and therefore, don’t wait for them to ever be able to be together!
From the 1st part of the Daily Kabbalah Lesson 11/7/11, Writings of Rabash