Want to make life hard for your brand? Try making it talk to 2 separate target audiences at the same time! 

Brands should be built to connect with your ideal client. Let's say you have 2 audiences – say, housewives over 40 who are dealing with aging issues AND men who want to improve their sports performance after an injury. Your brand will have a hard time making that connection, because the audiences' needs, problems and even visual preferences are different.

Focus on one audience, or one main problem that you fix, for your brand to address. For example "I help people with specific health problems feel their best". Then you can design your brand to communicate that.