Unsupportive 'friends' πŸ˜•

Elle β€’ I threw my pie for you
So I have an interview tomorrow, it's for an amazing job and the pay is brilliant so naturally I'm really nervous! 
I told my friend an answer I've given before which has really gone in my favour, covered lots of points and possibly got me the job in the past. I told my friend and she said to be careful what I say. She always seems to put a dampener on things and now I feel like I'm going to say the wrong thing and am even more nervous. It's not the first time she's done it. 
Do you have 'friends' like this? How do you cope with it? Have you been in a friendship like this and if so what happened? Also any interview tips to calm my nerves would be great πŸ˜‚πŸ‘πŸΌ