One of my worst habits is not doing things out of fear - fear of failing, fear of what people might think, fear of unforeseen consequences. I know you've been there too.
I probably wanted to start a blog for a year before one day, I just did it. And after? I never looked back. Over the past 12ish months I've met the coolest people, had some wonderful opportunities, and have just learned a lot about myself. The feedback and love from family and friends has been so surprising and inspiring and wonderful. What the heck was I so worried about?
I've recently been considering taking some big risks in my near future - all I have to do is to just do it. Take a leap of faith, put myself out there. Terrifying? Yes. But I know that if I take the risks and they pay off, some day soon I will be wondering - what the heck was I so worried about?