What would you say to the individual that has all the content in the world but is having trouble implementing it?

The hard part is the implementation aspect or the over analysis of like, oh God, I know I should do this. Should I change the color of the button purple and all this other stuff or, to some of these points, I hear a general sentiment of I kinda know what I need to do, I've heard it before, I'm just having trouble pulling the trigger. 

How would you address someone who's in that specific situation?