To save money needs careful planning on every expenses that you have,writing all the necessary details on all your expenses monthly and dont waste your salary towards unneeded things will help you save money.
Try to multiply your income and try to deduct your expenses, I know it sounds weird but if you follow this you will surely save a descent amount of money in long run.
Yes and stop spending in unwanted things which are not important, just try to stick on your basics and do not invest in any ponzi to multiply your money in quick time.
Harder to do with most people.
Most usually are in debt because they usually buy things they dont need, then tend to forget. I know several friends like this, and I ask them why they have "this" and they be like "oh, I was looking for that".