New Job Position (Terrified)

So, I have been at my job going on two years. I have been involved in the hotel industry going on 6 years now off and on. I can work every shift at this hotel (or most choice hotels for that matter). My manager who hired me (whom I have known for years) is quitting. Also, we are having one employee leave us (not by choice) and another leaving by choice. Another employee is walking the line too. That leaves two girls who are on pregnancy leave and myself that know the system. Basically we are screwed right now. However, I was offered the position as manager. My parents say I can do it, my best friend says I should do it, I myself am unsure. I am not a dominant personality, in fact, I identify as a submissive personality. However, I have always worked hard, been honest no matter what, and loyal to the company. I come in when every anyone calls even when I was working two other jobs. So, do I deserve it? I think so. However, I am terrified. I am terrified that I will get yelled at by angry customer with a complaint and I will break down or that I will do a bad job.

I used to have several addictions in my life. Drinking and diet pills were two of them. I am nervous that I will go back to those bad coping mechanisms if I accept the job and people yell at me.
Even my coworker (the one leaving not by choice) asked me tonight did I think I could do it. She thinks that I will be a pushover. I am just a big time people pleaser and angry people scare me.

However, I want to move up. I want to not be able to say that someone wanted me in a higher position. I can't be minimum wage my whole life. I have a college degree for God's sake.

I don't know, I guess I just needed to vent.

*rant over*

Oh yea, and I do use this site to read stories and I even comment on some, haha. I don't just post rant journals which is what I seems like I do. : )