Seth Godin once said, the cost of failure is dwarfed by the huge cost of not trying.
This is absolutely very true. Most of the times we do not even take the next step because we are afraid as to what will happen next. We are in our comfort zone and we wish to be there.
At work or even when starting up, the moment you start trying to make something happen, you change yourself and also make a difference in what you believe in and do.
So, instead of spending time on planning the execution or writing a fool-proof plan, just try. It will give you success else a beautiful learning.