Get rid of addictions/habits: addictions or habits (in mild cases) are harmful not only for your health, but also for your finances. Cigarettes and alcohol are responsible for consuming a large portion of the income from individuals living on minimum wage.
Indeed, these two become one of the expenses to spend the most of our wage. I personally don't do both, but I am seeing some of the people around me, who seem like being so happy if they have got their cigarettes and alcohol sometimes, which seems to be more essential than spending to buy rice 
I ever asked them which one to choose between cigarettes and food, and they prefer cigarettes. I can't think their thought but is cigarette addiction that bad? Additionally, to stop spending money on those two may be very difficult for them, moreover, it will depend also on the environment where they live. Sometimes, the environment also influences the habit. But, if we are living in such poor conditions with health habits, we may be able to do it as long as we have the awareness to stop, although it will be very difficult to do.
Choose carefully where you go shopping
When we have a small wage ad we live in a poor environment, we may not need to choose where we want to shop, because we have been aware where the place we can afford. The shop around us with lower prices will be much better. The worst thing is if we have a small wage in a poor environment but our style is like a rich man's and we force to do that, this will cause problems because the style doesn't fit the salary. Briefly, indeed, I really do agree that managing money is very essential where we live and whatever the amount of the salary. Money management will determine how we live and how we can survive in any condition. This is very important.