The best answer for "how's life?" would depend on the context and your genuine feelings at the moment. Since "how's life?" is a common, casual greeting, the response doesn't have to be overly detailed. Here are a few possible answers:
- "Good, thank you! How about yours?"
- "Not too bad, thanks. How's everything with you?"
- "Life's been pretty busy, but overall, it's good. How about you?"
- "Can't complain, things are going well. How's life treating you?"
- "Ups and downs, but I'm hanging in there. What's new with you?"
Choose an answer that aligns with your current state of mind and how much you want to share with the person asking. Remember, it's a casual greeting, so a simple and friendly response is generally sufficient.