Best ways to go about this will depend on what stage of business you’re in and your industry, but here’s what I do for my clients:
1. Social listening - especially Quora and Reddit. What are people asking about? How do they talk about the problem you solve?
2. Competitive analysis - what are others doing? How are you different?
3. Values/Purpose - why did you enter this industry? what’s something that only you and your team can bring in matters of attitude, values, process?
4. This may sound woo woo, but free-writing and brainstorming. There’s lot of good online resources about positioning and you can use them as prompts. It’s not a waste either, because a lot of that can be used on sales pages, social, and long-form content.