Only fools rush in where angels fear to tread
The above quote is useful on a business context. The take home message is to do your homework before committing yourself to action.
Things are not always as they seem. In my time being the CIO at a medical software we had a saying, code now and repent later. In IT it is the golden rule to tie down the scope at the start.
Analyse any business process or problem before acting. Don't get confused between the symptoms and the root causes.