I have several comments...
First, choosing a language that offers the highest average salary means very little if you can't find a job for that language. At Indeed, there are few job postings for Clojure. (At the time of writing, Indeed had 207 Clojure postings in the US, compared to 94,000 for Python, 63,000 for Java, 58,000 for JavaScript, and 44,000 for C#.)
Second, you aren't guaranteed to get the highest average salary. Much will depend on your level of experience and skill. As a programming newcomer, you won't have much skill at writing software; it takes many years to acquire such skill.
Third, Clojure is a functional programming language. Most major languages are object-oriented. Functional programming is more challenging to learn and to master. That's why, with the exception of Scala, there are no functional programming languages in the Top 20 at TIOBE, PYPL, RedMonk, and IEEE Spectrum.
Object-oriented programming (OOP) is, by far, the most widely used programming paradigm. Mastering OOP will boost your career prospects.
Fourth, if you want to truly understand object-oriented programming, the ideal way to do it is by studying Smalltalk. It is the best OOP language in the world.
Studying Python, Java, or C++ will lead you down the garden path in OOP.
