After the war, Reb Michoel Ber Weissmandl zt'l established a yeshiva in America, and at times, he would go to wealthy people in America to ask them to support the yeshiva. Once, he had an appointment with a rich person in Manhattan at four in the afternoon. Reb Michoel Ber hired a taxi and began his trip to Manhattan well before the time of the appointment. He didn't want to come late to this important meeting. However, the taxi driver was new at his job and didn't know the exact way. They were an hour late when they arrived at the office for the meeting. It was already five o'clock. The secretary told Reb Michel Ber and his assistant that they missed the appointment and would have to reschedule.
Reb Michoel Ber was disappointed. He wasted precious hours without results.
Reb Michoel Ber immediately reminded himself that what occurred was Hashgachah pratis, and therefore, there was no reason to be upset. He took out a Chovos HaLevavos and said to his assistant, "I will never rely on a new driver, only on someone who has experience. And who is the 'driver' with the most experience? It is the Chovos HaLevavos! Klal Yisrael has been traveling through life and the world under his direction for five hundred years. Whoever follows his directions will reach his destination to where he needs to go. Whoever follows the counsel of the 'new' drivers will travel for hours on the wrong paths and, after much distress and disappointment, will end up like us today, traveling without any purpose and benefit."
The Imrei Emes zt'l (Korach 5676) says that he heard a lesson in the name of Rebbe Bunim of Peshischa zt'l in his youth. Rebbe Bunim noted that if everyone in the world would place their pekel (package) of tzaros on a table and there would be an announcement that every man could take whatever pekel he wanted, everyone would grab their own pekel with both hands. This is because Hakaodsh Baruch Hu gives each person the strength to pass his tests. As the Chovos HaLevavos writes at length (Shaar HaBitachon), a person must believe that the portion that Hashem gave him is precisely what he needs, and therefore, no one should have complaints about how Hashem leads him.
The Imrei Emes says that this is hinted at in (Bamidbar 17:24) מטהו איש ויראו and the Targum writes ואשתמודעו, meaning that each person understood that the problem they have is best for them.
