Welcome to the daily chizuk (encouragement). Everybody wants to feel secure in life, to know that they, their children, and their grandchildren will be taken care of. The feeling of being secure is priceless. Many people get that feeling from knowing how much money they have. But money is not secure; it comes and goes. It's called a zuz in Aramaic because it keeps moving from one place to another.
However, the Chovot HaLevavot writes in the Sha'ar HaBitachon that the Parnassah (livelihood) of the one who depends on Hashem and gets his feeling of security from Him will always be guaranteed. When the Brisker Rav got married, he received a lot of wedding money, invested it, and lost it all. He went into a room and learned the entire Sha'ar HaBitachon, and then he was walking around in a great mood. Someone asked him, “You just lost everything. Why are you so happy?” He answered, “What's the difference between me and a wealthy man? Hashem provided me with Parnassah for today. The only difference is that the wealthy man thinks he's secure down the road. But now I have Bitachon (trust in Hashem), so I know I'm secure.” You could have the feeling of security that money is supposed to provide right now.
Rabbi Ephraim Waxman told the story of a Jew who worked for many years and amassed a life savings of a million dollars. He wanted to set himself up to invest the money and retire. He invested with someone who turned out to be a crook, and he lost his money. For two or three years, the broker was playing with him: “I'm investing here, I'm investing there.” Finally, he couldn't hold it back, and he admitted that the money was gone. The Jew was thinking, “Why do you have to tell me? I was living fine. I thought I had it all in the bank, and if he had never told me, I would have kept going on feeling secure.” But if a person has Bitachon, it could bring you the same peace of mind.
The Baal Shem Tov writes on the Pasuk (verse), Hashem Tzilcha, that Hashem is your shadow. In the same way your shadow shows you back exactly what you do, so too Hashem acts toward a person according to the way that they feel and act. If you feel that Hashem is providing and Hashem is taking care of you, that's the way Hashem will act toward you.
Rabbi Waxman told another story of a poor man who had to make a wedding. This fellow was talking to one of his friends at the Sheva Berachot, and he pulled out a wallet full of money and said, “This is all the money I had to my name last month. I just spent $20,000, and I still have the exact same amount of money, and I don't owe anyone a penny.” The how is not important. That's Hashem's job. But we have to feel that even if I don't have a large bank account, when I need the money, Hashem will provide. Stop worrying so much.
The rabbi said further, “Imagine being a person who is free from the bondage of money. Such a person is a king in today's society. He's a free man. That's the Baal Bitachon. Someone who's not worrying, not fearing, not killing himself, because he already has it.” Like the Brisker Rav said, “I have Hashem. My father is a billionaire.” Have a great day.