If a person wouldn’t run after his parnassah, the parnassah would run after him because before someone is formed in the womb, Hashem decrees whether he will be poor or wealthy (according to Hashem’s wisdom of each individual’s needs). Everything is decreed (other than whether he will be a tzaddik or a rasha, as that is up to each person’s free choice). It is decreed which utensils he will have, his clothing, his money. Whatever was decreed will occur. He won’t get more or less. The parnassah that is destined for him will run after him…”
~ The Meor Einayim (Va’eschanan)
Therefore, make sure to set aside time to learn Torah and serve Hashem as it won’t detract from your parnassah.