Do we plan our life challenges before birth?

1. Yes, from the point of view that we create our own karma which determines everything in a particular life.

2. In a sense there is a degree of choice in regard to what experiences one has is to encounter in a particular life from amongst the millions of experiences usually waiting to be experienced. These experiences cannot all be experienced in one lifetime.

This is an extremely complex process.

The closer to Enlightenment the Soul is the less the number of experiences to be undergone.