How should one respond when someone asks you "How are you doing?" at the start of the conversation?

 There are many ways to respond to "How are you doing?" The best approach depends on the context and your relationship with the person. 

Here are some options:

• Simple and positive: "I'm good, thanks! How about you?" This is a classic response that works in most situations.
• More informative: "I'm doing well, thanks! Just finished working on [project name]. How are things with you?" This adds a bit more information and shows you're interested in their day as well.
• Honest, but brief: "I'm doing alright, thanks. A bit busy lately, but hanging in there." This acknowledges you might not be perfect, but you're managing.
• Humorous: "Well, I haven't been launched into space yet, so that's a good sign! How about you?" This injects a bit of humor into the conversation.

Here are some additional tips:

• Match their energy level: If they seem chipper, respond with similar enthusiasm. If they seem more subdued, keep your response calm.
• Non-verbal cues: Smile and make eye contact to show you're engaged in the conversation.
• Reciprocity: Always ask them how they're doing in return.

Ultimately, the goal is to acknowledge their greeting and show you're interested in them.