lose oneself

verb2

1. •
   To lose one's way; to become lost.
2. •
   (figurative) To become deeply involved (in something) or overwhelmed by a (particular) sensation or emotion (in either a good way or a bad way).

   • Sometimes you just need to kick back, relax, and lose yourself in a good novel for a while.
   • Staying informed is important, but let's not lose ourselves in despondency over the doomerism that blasts our eyeballs everyday.