It is said that well well planned is half done. Good plans are important to any task, but is it better to have perfect plans or getting something done?
No matter how much you plan it won't make anything ready. There is also always things that are impossible to plan ahead. You can only plan for the unexpected, but those surprises need to be handled as they appear. Unless you want to get back to the drawing board every time it happens.
O tend to over think and plan things way too much. There are always things I don't seem to be able to finish on the plans preventing me from starting the actual work. If only I could get one tenth of the things done I have planned that would be a lot.
It's almost easier to get started without a plan. Take everything as unexpected and take care of them along the way. Just like writing. If I stop to plan what to write I'll never end up writing. But if I just start there is always something coming out. It might not be perfect, but at least it's done. And it's always possible to fix and improve the things later.