Among the material benefits is that a person who has bitachon will have less anguish in business, if, for example, he cannot sell his merchandise, or if he is not able to collect a debt that is owed to him, or if he becomes physically ill.

וּמֵהֶן מִעוּט צַעַר נַפְשׁוֹ בְּמִסְחָרוֹ, וְאִם תִּתְעַכֵּב אֶצְלוֹ פְּרַקְמַטְיָא, אוֹ אִם לֹא יוּכַל לִגְבּוֹת חוֹבוֹ, אוֹ אִם יִפְגָּעֵהוּ חֳלִי בְּגוּפוֹ,

Naturally, a person would become upset or even angry if any of these things happened. Nevertheless, a person who has bitachon will not let these things upset him.

Less anguish in business. A person must work and serve G‑d, as it say in Ethics of Our Fathers: Torah study without work cannot endure ( Avot 2:1). It is only that with trust in G‑d the person mitigates his aggravation ( Tov Halevanon ).

This is because he knows that the Creator, may He be blessed, repairs his matters better than he can and chooses what is good for him better than what he would choose for himself.

מִפְּנֵי שֶׁהוּא יוֹדֵעַ כִּי הַבּוֹרֵא יִתְבָּרֵךְ מְתַקֵּן עִנְיָנוֹ יוֹתֵר מִמֶּנּוּ, וּבוֹחֵר לוֹ טוֹב יוֹתֵר מִמַּה שֶּׁהוּא בּוֹחֵר לְעַצְמוֹ,

Better, etc. The logic is simple: Everything that G‑d does is for the good, and G‑d truly knows what is for our good ( Tov Halevanon )

Bottom line
G‑d can make better choices for you than you can make for yourself.

As it says (Psalms 62:6): Only to G‑d should you hope, my soul, for my hope is from Him.

כְּמוֹ שֶׁנֶּאֱמַר (תהלים סב, ו) "אַךְ לֵאלֹהִים דּוֹמִּי נַפְשִׁי כִּי מִמֶּנּוּ תִּקְוָתִי."

G‑d knows what is best for a person, and, as such, a person’s hope should be placed only in G‑d.