Parnassah
The pasuk (Tehillim 37:3) טוב ועשה 'בה בטח, "Trust in Hashem and do good," also applies to the pursuit of parnassah. When one has bitachon, he knows Hashem can sustain him even if he works less. With bitachon, one will have more time to serve Hashem. This is the meaning of the pasuk טוב ועשה 'בה בטח. With bitachon, one has more time to do good.
The Be'er Mayim Chaim (Bereishis 58:5) writes, "The amount decreed for a person to earn on any given day will certainly occur. Even if he hides in a room within a room, the money will pursue him and reach him." The chacham (Sefer HaPninim, Shaar HaEmunah) writes, 'If a person runs away from his parnassah like someone running from death, his parnassah will run after him even quicker and will catch up to him.' So, why should you work so hard, with all your strength, the entire day, from sunrise until sundown? Even if you work part of the day, you will certainly earn the same amount of parnassah as if you worked all day."
The Agra d'Kalah writes that this lesson is hinted at in the words מארצך לך לך. Hashem was telling Avraham that he should leave the notion that everything happens according to nature and instead trust in Hashem. אל אראך אשר הארץ, Hashem will prepare the means of parnassah that you need. You don't have to search for new ideas how to earn parnassah other than the plan Hashem arranged for you.
אברם, the Agra d'Kalah says, is roshei teivos איש בלב מחשבות רבות, "There are many thoughts in man's heart." People are constantly thinking up ideas of how to amass wealth. תקום היא 'ה ועצת, we should follow Hashem's counsel and engage in the parnassah that He prepared for us.
Avram's name was changed to אברהם. The extra 'ה can be written out fully in three ways: ה"ה ,א"ה ,י"ה. The filler letters spell א"הי, and the Shlah HaKadosh (Shaar HaOsiyos 46 ,א) explains that it comes from the pasuk 'ה עצת תקום היא. The roshei teivos of א"הי are ירצה אם 'ה, "If Hashem wills it."
So, instead of איש בלב מחשבות רבות, many thoughts of how to earn parnassah, follow 'ה עצת, Hashem's counsel, the parnassah He prepared for you, א"הי, im yirtzeh Hashem, תקום, that will be enough for you to earn your parnassah.
Overcoming Fear
When you tell someone, "Don't be afraid," you are saying, "There is reason to be afraid, but be strong, and don't let yourself fall into panic and fear." But when you ask someone, "Why are you afraid?" you are saying there is nothing to fear.
Dovid HaMelech says (Tehillim 27:1) אורי 'ה אפחד ממי חיי מעוז 'ה אירא ממי וישעי, "Hashem is my light and my salvation, whom shall I fear? Hashem is my life's strength; whom shall I dread?" He said this as a question because there is absolutely no reason to be afraid. There is nothing to fear because we are in Hashem's caring hands, and everything is from Him.
It can be compared to a person dancing at a wedding dressed in a bear costume, and a young child is frightened thinking it’s real. The child's father shows him it’s just a costume, and the child understands and calms down.
The Chinuch (mitzvah ו"תקמ) discusses the mitzvah to build a gate on a roof (לגגך מעקה). The Chinuch writes, "Hashem's nation is guided by Hashem. Everything that happens to them, the good and the bad, happens due to Hashem's decree. As Chazal (Chulin 7:) say, 'A person doesn’t knock his finger unless it was decreed Above.' Nevertheless, a person must protect himself from the dangers of this world." The Chinuch is saying that no one will fall off the roof if it isn't Hashem's decree; nevertheless, we must make hishtadlus that everyone stays safe. Therefore, we shouldn't worry about the future, even during these difficult times in Eretz Yisrael. We should take all necessary precautions, but that is solely as far as our deeds are concerned – our hearts shouldn't be afraid.
In the Hoshanos, we say, ...מדלקת דגן הושענא מבהלה נפש ...מחגב חיטה, "Save the crops from fire... the wheat from locust... the soul from panic." The Chofetz Chaim zt'l said that crops are totally consumed in fire, locust completely destroys wheat crops, and so, too, a person's soul is totally ruined from בהלה, worry and panic.
