Hi, I'm new here. I am 24 years old and I just recently quit my job as a veterinary technician. I have a degree in biology and I thought that I wanted to spend my life working with animals in some capacity, but it turns out that work is too physically demanding for me. I have decided that I want to become a teacher and I just got hired to be a substitute teacher (I start monday) but I am having doubts and freaking out and I was having a bit of a panic attack before I decided I should get online and ask for advice. I thought that teaching would be a good job choice for me because I want to contribute something to society and I am actually quite creative so I feel I might be good at it, but I am also somewhat shy and my anxiety has just been getting worse with age. I know the logical thing is to just try out the substitute teaching and give it a chance, but my anxiety level is so high at this moment that I am afraid I might have a nervous break down on my first day. I am not sure why I have all of a sudden started to feel so terrified, but that is simply the way anxiety works for me. I can feel perfectly at ease in a situation and then all of a sudden I am having a panic attack. I am just feeling worthless and hopeless about my life because if this teaching thing doesnt work out then I have no idea what I am going to do with myself, and I already feel like a complete failure at life and I haven't even give this a chance.