How do I get my confidence in Acting back again?

I finished an Acting course at college 2 years ago, and after that I decided to get my own life experience and work hard to make money and support myself. Which i don't regret! Although it's been 2 years I have learnt a lot about lots of different people and have grown a lot myself. Only thing is, I still do have the passion to get back in to it and one day want to end up in West End shows/Film & TV... I want to apply again to Drama school in September but I'm feeling quite insecure which isn't good because they'll spot that right away. How do I get my confidence back? I used to get good feedback from people at college and came out with good grades in acting. I loved it. I feel a little "out of practise" and don't know any theatre groups in my area. I want my oomph back! :(