Dovid HaMelech was a great Rebbe. His counsel for hatzlachah was to study Torah. As it says in Tehillim 1, “He only desires Hashem’s Torah…whatever he does, will succeed…”
This isn’t solely a brachah, it’s a guarantee!
If you study Torah, you will succeed in everything you do.
~ R’ Yochanan Twersky of Rachmastrivka