How Much Life Insurance Do I Need?

Mom has really been reminding me constantly that it is one of the most important and fundamental steps in creating a good financial plan for myself. Which may require me to purchase of a life insurance policy, just to ensure my future. This step maybe hard for me to start, since my job is not really giving me enough salary that will allow me to do all this. I really think that I should get a second job so that I can do all what I need to do for me to be able to put my life in order.