Living Alone
noun
If 暮らす is "to live" or "to live one's life," then to live one's life as 一人, means you are living alone.
The reading is the vocab readings from 一人 and 暮らす, so you should be able to read this on your own. Just note that くらし changes to ぐらし due to rendaku.
一人暮らしをしているので、冬時間が始まった時に、時計を一時間遅らせることを忘れてしまいました。
I'm living alone and I forgot to set my clock back an hour when the winter time started.