This big question is arise every time Personal Branding is important or not? 
YES,According to  the corporate world personal branding is very important for everyone if you can't do a personal branding for yourself  so how you can sell your product to your customer or what I can say to  the world. First responsibility to promote yourself as a brand than your brand can sell in the Competitive World.
Branding is not that only company wants every one wants a their own personal branding. If you can't promote yourself so how can you survive in the world. For the personal branding you don't need more you have to do a just little things and then, you can or you will become a Personal Brand for your own.
To improve their own personal branding. We have to improve our skills and abilities these are both thing they can help people for their own personal brand and than become a big personal brand.
People should have knowledge for every product in the market, knowledge for every brand know their competitor   if they know their own competitor so, they know in which areas he/she can improve . People should have to good ttheir own skills like Communication,time management,relationship management so this skill can help to the people's 
For become their own big personal brand I am using one line that. People should be classy rather than the ordinary people's. As we know ordinary people they do their job always very well . They laugh on others with very dedication . They always misunderstand the other people this type of people never become a their own personal brand.
I wanted to give a one example that. We all know the vijay mallya very well Recently he is in crisis but this person  own brand itself. Kingfisher knows because of vijay mallya this called a big personal branding. So the personal branding is very important people should do something for their own big personal branding in this competitive world...