Saving should be reasonable. There was such a Plyushkin in Gogol's Dead Souls. He was so economical that he wore rags and ate rotten food, even though he had plenty of money. Life passes quickly, and you should not deny yourself basic pleasures because of excessive savings. You can make it a rule to set aside a certain portion of your income, but certainly not a large portion.
Such insane savings will always result in even greater waste of money. Bad food will lead to problems with well-being, and ragged clothes make unrepresentative and ruin prospects in social terms.
But I can give the most striking example from our real life - if someone saves on dental treatment, he always pays twice, if not more.
Therefore, rich people and rich people, they buy expensive things, but for a long time, the same thing with food - they take high-quality food, and then do not spend on health