Focus on learning the fundamentals of Computer Science, the rest of the decisions, you will make them later when you have enough data. Learn to program. Don't learn a specific programming language. Learning a new programming language is easy when you know the fundamentals of programming. Focus on learning the concepts, not the implementations. Don't focus on the tools. New ones always come and go, but fundamentals rarely changes.

While writing this comment, I was reminded of a verse in the bible that tells Chrstians to 'seek the kingdom of God first and the rest will follow'.