These are practical and logical things. In short you have to be responsible with what you are spending your money with. What is ideal is to invest your money into something profitable but it is also not wrong to buy things that you've dreamed of as long as there are limits. If you really want to get rich you need to plan your expenses as well as the cash in or cash flow on your account; Start 'em young as most of us are saying. Invest on knowledge as well to gain ideas on diversifying your money and not solely depending with one thing; that would generate more profit.
In my PoV,
1 - Never do impulsive purchases
2- Never purchase something which you can't afford
3 - Never be greedy or foolish
I think the most important thing a living human being should do is invest their money, while you are investing your money do not forget to enjoy yourself and have a good life too, time wait for no one, invest your money and find a good way to enjoy it.
While on the journey of investing and getting rich many people have failed to live.
Balance things out. You may enjoy and be responsible at the same time just avoid being eaten by greed and materialistic. At the end of the day; that is your money so you have rights what to do with it.