One of the biggest aspects of conducting business in this modern day and age is that we have slowly started to come to terms with the fact that there are lots of ways in which the manner in which your brand is perceived can end up having a pretty strong impact on the manner in which people would perceive your enterprise at any given point in time. Hence, you might want to go into the brand designing field if you want to get in on the ground floor in some way, shape or form.
A big part of the reason why that is the case has to do with the fact that a branding designer is the sort of person that would be crucial to the launch of a business, and the most important task that you might just perform in this capacity would be that of maintaining consistency in the branding. A brand needs to be consistent otherwise people might end up becoming just a little bit confused about what the brand is actually about, so it is your job to ensure that no matter what happens all of the representations of your brand that are going to go out there and get viewed by the general public will have at the very least some level of consistency with each other.
A lot of top notch brand designers have built their careers around things like consistency, and this is something that you should try your best to bear in mind as well. Most really amazing brand guidelines will prioritize this facet above everything else so this is the area that you should focus on the most of all as well.