One of my favourite topics to date would probably be about personal branding. I think why a lot of successful people exist is because of how loud their brand speaks to millions. There are many aspects to branding and here are a couple ideas, I can share: 

1. Your brand is what people talk about when you leave the room. 
2. Connective Intelligence is the best and fastest way to grow your brand.
3. Be true to yourself because authenticity is gold.