u see, u touch, u enjoy and then u want to enjoy again.this happens because u associate permanence and worthiness with everything around u, which results in desire.as soon as u realize the true nature of things, u get rid of these desires. u continue to feed the flame of ur existence by seeking satisfaction, by seeking desires; the moment u withdraw, its the moment the candle is blown off. this is nirvana which literally means blowing out-end ur existence and that is liberation