Please let me clarify first: anyone who is extremely poor or wealthy is not included in this discussion. Only those who are employed with steady income, some savings and spare time will find this topic useful. I guess most of us are doing fine now but financially we have to face one common problem: how to spend money. This issue leads to many consequences if not handled properly. Here I would not start any broad and subjective agruement. To deliver my message clearly, I am using some specific examples to elaborate. For example, a lot of peole complain that their income is not enough to cover their daily expenses so they can't save much money while...they spend seven bucks on a cup of coffee almost every morning, throw a hundred dollars on some gym membership cards but never show up training, have dinner with some random girl in an expensive restaurant, buy drinks in bars and waste hundreds of dollars... The list goes on and on. If you live this kind of lifestyle and at the end of months, you are running out of money or can't pay the mortgages, whose fault is this ? I can not provide any statisitics but I am sure that many people have fallen in the trap and can not get out. I hope you are not one of them.
I progressed here and right now I can say that I wasn't really rich or poor since I had a stable income already and probably good enough savings and investment but still I wasn't some rich guy or successful enough. The most obvious trick that I learned is just to dont spend on something that you can't afford, it's okay to buy and reward yourself sometimes especially if you feel drained from work, etc. But the first thing you should ask yourself every time you go to buy something is can you afford to buy it? if you think you can then yes, for example, if you are going to buy something worth 100$ then maybe compute on your salary, if you have a salary for example of 500$ then probably you can afford it since you're going to earn in next month easily. The worst thing is buying something like an iPhone, laptop, or gadget because you just want it, with a very low salary you gonna use your credit card which is a very bad move because it's going to be difficult to pay that plus interest
Also, make sure to keep track of your income and spending, we mostly doesnt know where the money goes because we dont really track our expenses its a good trick in my experience, you're also gonna need multiple income streams for sure, so that you can also invest and afford whatever you want.