STEPS TO GETTING AND KEEPING ABS
1) LOWER BODY FAT%
This goes with out saying, you need to lower your body fat in order to see your abs. There are many ways to go about this and it's not a one size fits all process. Everyone is totally different and every body reacts differently. This is why I believe cookie cutter type approaches don't work. Find a coach who gets to know you and your body (thanks @nmadder @madstrengthtraining
2) EXERCISE spot fat reduction is not a thing. Lift weights to burn more fat. Add in ab exercises to make them pop once body fat is low enough to see them. I train abs 2-3 times per week after training other body parts (and always have for the last 3 years).
3) STRESS LESS if you are stressed then your body will store fat and fluid around your vital organs (i.e. Your abs) as a survival mechanism. Make sure you are winding down, sleeping well and overall not too stressed. Noticed how you tend to look leaner around your midsection on a holiday?
4) AVOID FOODS THAT CAUSE DISCOMFORT OR BLOAT if it doesn't sit well with you, don't eat it. If your body is inflamed then you can say bye to a shredded 6pack