It seems like that doesn't make sense. Don't you have to be ready before you do something?
Last week we were talking about sharing our faith with WATER (sr. high) students. Almost all of them felt like they were at this point, they were willing by they did not feel ready. And I bet I can tell you the reason most of them didn't feel ready.
They didn't do it.
It's a cycle that can only be broken by diving in. Like swimming, you can read all the books about technique and watch all the Michael Phelps video you want, you will never feel ready. The only way to get comfortable is to actually do it. Or what about driving, who remembers the first time you drove? You can take all the classes and read all the books, there is still an uneasiness when you take that 2 ton vehicle out on the road for the first time.
The only way to get over that sensation of not being ready is to actually practice doing it. This goes for anything in life, this is not evangelism specific. The only way you get more comfortable is by doing it more.
So it begs the question, what are you holding back from doing for God because you don't feel ready? Obviously sharing our faith is one thing, but what else is there? Maybe if you just start doing it you'll slowly feel more comfortable and more ready.
From the Book of Nike 2:15 - Just do it.