Welcome to the daily chizuk (encouragement). Emunah (faith) is the source of all good middot (character traits). If you know Hashem is controlling everything that happens in your life, and He only wants to benefit you, you'll never be jealous. Shlomo HaMelech said, “The rotting of the bones comes from jealousy.” And Rabbeinu Yonah writes, “All good health is dependent on the heart, and what weakens the heart? Nothing more than jealousy.”
The doctors say that the most dangerous of all health hazards is stress. And where does stress come from? Looking at other people and saying to yourself, “Why am I not achieving like him?” And it puts such a pressure, and it could lead to both physical and emotional illness. But someone with Emunah says, “What does he have to do with me? Hashem gave me exactly what I need now to serve him properly and to do my job in this world.”
If you are trying and you're putting in hishtadlut (effort), but it's not working, it's not your fault. People get down on themselves: “Why aren't I making more money?” They say, “I'm a good-for-nothing.” Chas veshalom (God forbid). The results are not in our hands. All we could do is try our hardest. But Hashem controls the results. And just because today it didn't work doesn't mean that tomorrow it won't.
Someone with Emunah rarely gets angry, because anger comes when things don't go the way I want them to. But someone with Emunah says, “It happened exactly the way it was supposed to.” And if this is Ratzon Hashem (God's will), then this is my Ratzon (will).
Someone with Emunah is humble because he knows everything he has is a gift from Hashem. If I thought of a good way to make a living, who gave me the brain to have that thought? Everything we have is a gift from Hashem, out of His tremendous mercy. And you can't become haughty when you're receiving gifts.
I once heard a mashal (parable). There was a poor man who was invited to his cousin's wedding in a fancy hotel. But he couldn't afford a suit, so he asked his neighbor. And his neighbor lent him a very expensive, nice $1,000 suit. And the poor man said... And the poor man puts it on. He goes to the wedding, and he sees other people there with cheaper suits. And he starts looking down at them. He says, “Oh, look at that. It's only a $500 suit. What are you doing?” You borrowed the suit. That's how we have to look at all success in life. We're borrowing it. Hashem is giving it to us. Have a great day.