Memories
Memories are vicious things (and I don't necessarily mean in it in the negative sense)... They are self absorbing.. make you forget reality... almost like a quagmire... Also, they are like the items kept in a Cupboard ... If the cupboard stays locked up for too long, the minute you open it, a million thoughts keep flowing out... and we are just left recollecting old thoughts and worries... If we kept opening the cupboard once in a while, it would be well ventilated. Also, it would be easier to weed out and forget old worries, and make space for new memories. Needless to say there won't be a flurry of clothes tumbling down.. Afterall, our head has only that much space for memories, where we pack them all :)