Leaders, and especially entrepreneurs, are hard-wired to seize opportunities and follow leads.

This is only effective, however, when those leads and opportunities help you move forward in your existing strategy towards your agreed mission and vision.

Otherwise they are a distraction and they suck energy out of you and your organisation.

Always judge potential opportunities against your existing goals and priorities.  Otherwise productivity drops. 

Productivity is like a  reputation. Its hard to acquire but easy to lose!