Answer: That would be in education and information. This has always been most correct and safest.
The one thing that we lack in this world is truly educated and intelligent people, not necessarily professionals, but educated people who understand what the purpose of life is, what the meaning of life is and how to live it; this is not in vain.
If a person has the opportunity to acquire education and information of this kind, and this can be acquired only through his own effort, then it is worthwhile for him to invest in it.
From the Kabbalah Lesson in Russian 3/27/16