A PhD, short for Doctor of Philosophy, may help you secure a position as a college or university pro. Maximum output with some simple thoughts...
Obtain experience in the field with a research internship
In many fields, hard science in particular, securing a summer internship as an undergrad can do a lot to make you stand out on your applications. If you can get experience assisting in the biology lab, or doing field work with the other geologists, or even assisting a professor grade surveycourse tests, youll be one step ahead in the academic field.
Workstudy programs in your field of interest can also be extremely attractive of graduate applications. If youre studying English, try to secure employment in the Writing Lab, rather than the cafeteria to give yourself an edge and valuable experience.