The Vilna Goan: Reincarnation

The Vilna Gaon writes (Commentary on Jonah):

“The main thing [to keep in mind, is that the purpose of reincarnation], is to affect the repair of a [negative] influence, originating in a previous lifetime...

[One way] to discern exactly what that negative influence is, is to reflect upon the type of wrong your soul yearns after the most, in this lifetime. That which you yearn after most, is likely something you became habituated to in a previous life.

And therefore pay attention to your vices. [They tell you exactly what you have to work on in this lifetime.] ...The main thing is, to repair that which one stumbled in in a previous [life] ...

That’s why some people are drawn after one type of sin, more than another. And that’s also why our Sages say, that one must continually judge himself, and weigh his actions..."