YES GO AHEAD AND TAKE THE STEP!
I saw a video of a baby horse that was so scared to take its first step. It was so scared that it kept going back and forth. And to think that the step it was meant to cross over wasn't even up to an inch, yet the fear made it look like it was a mountain. Eventually, after many tries, the horse finally stepped over. The most interesting part of this is that the same horse that looked fearful and frail because it was finding it hard to take the first step started jumping up and down with so much excitement. You could see that the horse was happy to take its first step and to know that its potentials to do more than just taking a step were limitless! Need I say more? You have the potentials to succeed in that thing you're scared of doing. Go ahead, get up and take that step; you have been limited for too long! You will be amazed at the wonders you could do!