This quote from Michael Porter really sums up the need to have a strategy. Not all opportunities are created equal. Remember it all goes back to your strengths and weaknesses. You need to have your game plan set based on everything that separates you from the competition and will allow you to shine. You don’t want to be mediocre.
You can’t be everything to everyone and you can’t take on multiple opportunities because you will not only burden yourself, you will water down your talents, concentration and time to focus on all the little details. You will not execute to your ability. Saying “no” is hard but it’s a must when you making your game plan on how you set off to achieve world domination.