Not only are there a lot of different skills and software to learn, but there's also the challenge of creating good designs that don't feel like they've been done a million times before. As a new designer, you will have to advocate for yourself which can be tough when you feel so out of place.
Graphic Designers need to constantly be practicing and improving their design skills, which takes time and effort. In addition, they will need to stay up-to-date with design trends and technologies. While all of this can be learned, it will require hard work and a passion for the craft.