I applied for YC Summer 2015. Sadly didn't get in. But I am cool with that. I am here to tell you that it doesn't matter. If you work your ass off and want it bad enough, a YC or any other incubator won't matter because you have all the tools and talents you need to get started and to make a success. Today my app (http://www.getchoir.com) has about 200 B2B users and is growing daily. We've been featured on Product Hunt, Entrepreneur.com and Fox News. And funding is around the corner. I hope you can find some inspiration in this and use it to fuel your own success. Be well and keep working hard.
Best, Chris