I lost the will to live from heartbreak.
I don't even know if he's alive now.
My favorite anime character is currently in a critical moment between life and death.
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means "life," making this word mean "to live."
You have to remember the い portion of this word to be able to read it. Think of it this way and you should be able to remember it, though:
What does it mean to live? Life is pretty icky (いき ... the き comes from the hiragana part), but you have to take that ickiness and roll with it if you want to have a good life... if you want to live!