A person who works for daily, weekly, monthly wages needs to change their mindset to invest wisely. You need to understand that the profit is visible from a distance and you can often find yourself in a long drawdown (on a fall, it’s also good to buy an asset with free money).
As for frugality, the main thing is what percentage of profit a person earns and from what capital. From a certain point, you can ignore everyday expenses.
Working is great - it gives free money to invest more :)