敝帚自珍　

◎ 敝帚自珍 bìzhǒu-zìzhēn

[everyone values things of his own;value the broomstick simply because it is one‘s own] 将破旧的扫帚视作宝物来珍惜,比喻自己的东西虽然并不好或不贵重,但自己爱惜。也作“敝帚千金”