Struggling but Making Progress

I've read this often, "Abs are made in the kitchen, not the gym."

Front view my abs are showing already, and sideways too.  However, on this side view one can see the big chunk that needs to go.

I'm struggling with my diet, but tweaking it as I go along.  I've been fortunate to hook up with an older guy who is much into fitness, and knows a lot about nutrition.