Finicky

finick·y (fn-k)adj. fin·ick·i·er, fin·ick·i·est
Insisting capriciously on getting just what one wants; difficult to please; fastidious: a finicky eater

Uncle R's advise for the day was "... when it comes to work plan as though you are planning for a finicky person. That way you are less likely to go wrong coz pretty much everything has been thought off and anticipated for"