Think about it, this way:
If you spend 2 hours cooking dinner, at a homeless shelter, and the homeless then eat it, that was a sacrifice.
If you spend 2 hours cooking dinner, for yourself, and then you sit down to eat it, yourself, that wasn't a sacrifice. It was just you, investing in a high-quality dinner. I might admire your ability to cook, but I'm not going to act like it was some generous act of charity. The dinner you received is its own reward. Enjoy your meal.
I don't think most people "invest" to serve only themselves; it's usually for the whole households future. At least in our family.
The amount that working for your own family is considered a sacrifice, is sort of limited. We tend to associate sacrifice with something altruistic or out of the ordinary, not with changing your kids' diapers or buying a new mattress, that your spouse will also sleep on.
Should we all clap for people because they put money in their own kids' piggy bank? Putting money in their kids' piggy bank is like... their responsibility.
Those are things you'd do *today*, changing diapers or mattresses.
The sacrifice is sleeping on an older mattress for longer, or getting by washing fewer diapers, so that your kids have e.g. easy travel mobility or capital to start a business later.
