Often times in cash games, I would see someone dropping to 1/3 of their buy-ins and then become desperate. Then the next time they get any pocket pair or Ax, they would go all-in. While any two cards are playable in deep-stacked situations, being short-stacked is another matter. In short-stacked situation, a person should be looking for an opportunity to double up. He/she must look for situations that helps himself/herself get an edge.
For example, if no one raised yet and you are near the dealer button, going all-in with AK,AQ,AJ,AA,KK,QQ,JJ,TT,99 should be fine. Going all-in with a pair of 5s or A8 is reckless, and desperate. If there is a raise, the only real cards that stand a chance is AK,AA,KK, or QQ. If you are the type of person who does not have the patience to wait for cards, then just buy back to your normal range. Whatever you do, don't just throw your money away. If you are trying to find leaks in your game, this could be one of them!