You have many roles in this life and as you are now a master degree graduate in the field of Library and Information science then you have the right to dream to be a PHD holder and really many students deserve to be proffesors in the field but if you face this door is close then this is not the end of the world, try to open new doors for you and you will see that this field and what you studied for three years in the world of library and information science can open this door for you and be very and more successful even proffesors refer to you just to know what you achieved and develop wether in the field of IT, design, cataloging, knowledge management and many other fields that you were intrested in, so catch the chance and develop it, start from small things the let it grow, you will see the fruits and other will see it and be proud of what you did.

and as it is said: Every Day is a new day for the wise person.