Hey Lefty, In regards to nutrition it's relatively simple to aim for a six pack, however over a prolonged period that single minded view may prove detrimental when it comes to your over all benefit from your diet.

I cut down to get a six pack and felt really tired, low energy and less muscular than ever.
Changed my diet and Now I'm way more muscular and a whole load stronger and more energetic than I was, so be careful when approaching this.