burn the candle at both ends
Extreme effort without time to rest. The phrase, which came originally from a French expression, came to mean working so hard that you burn yourself out. In addition, because candles were once an expensive item, to burn one at both ends implied wasting valuable resources to achieve an obsession. The poet Edna St. Vincent Millay used the image in her verse: My candle burns at both ends; It will not last the night; But ah, my foes, and oh, my friends— It gives a lovely light.