saving money in the long run is very easy to do if you don't need your assets to increase, you just have to save it in the bank, but if you want your assets to increase your food you can invest in crypto currency, but my advice do not invest all if you haven't handled the currency crypto
The money which is not being spent is saved. This indirectly means if you want to save more money in the long run, you should reduce your expenditure and only then you can save big.
Another efficient way is to invest the little money you have in a good asset that so that the value of the asset will grow with the passage of time and hence the savings too. The money you do not need should be invested to do creative and profitable things rather than putting it in a bank just for a small percent of interest.