Opinions

I have made te decision to go back to school after many years of being out. I was talking to my mom and sister about it yesterday and they both told me that they don't believe that I will actually go back. I got upset and sked my mom if that means she doesn't bein me and she said that i was putting words in her mouth because that is what she said. What does everyone else hear when someone tel you that they don't believe that you will do something that you really want to do? Am I in the wrong for getting upset? Did it actually sound like she said that she doesn't believe in me?