It is always very difficult to understand the line of saving on yourself, after which health problems may arise in the future. My friend saves a lot on her food, preferring cheap products to expensive ones.
And this continues day after day, her weight is falling, but her general appearance has become unhealthy. With such savings in the future, she will have to give doctors a lot of money to restore her health, so such savings do not make sense.
It's very bad for people who think and act like that. For me, saving simply means cutting out unnecessary expenses, but we still think about the future, including our health, not just investing or saving.
Making a financial plan for the future doesn't mean we have to hold back on essential needs. That's what we need to understand first, and we also need to think long-term about the things we do that don't end up harming ourselves, as you mentioned.