Lunch, eating, yoga and the need of sleep (everyday)

How does one get to the situation where they aren't worried where their next meal is coming from? I'm sure you've been there as many of us have, but the hunger pangs of people is very painful if you get really hungry and have no idea how to get life to pay you forward so that you reach the point of eating. It's a weird life when you don't know how long it will take to get a meal in you so you can focus on work, finances or whatever it is that you do to bring in a meal. Whiz Kalifa has daily and constant portion controlled meals (which got him from skinny to muscular in a year or so) or the meals of the NFL kitchens.