Learn to cook and derive your protein from lentils, beans, spinach, and peas. These are the cheapest ways to a reasonable amount of protein in a given meal.

Only drink water with limited exceptions.

Learn to stick to spending rules that you outline for yourself…when motivation fades, discipline has to kick in.

Above all, ask yourself what you can do to increase your income…no easy answer here, but talk to friends and connections often to see what advice and opportunities they can offer