I went through the same disillusionment. My solution was go from the routine of learning of 20th programming language or mastering 100th API back to fundamental

I went through the same disillusionment. My solution was go from the routine of learning of 20th programming language or mastering 100th API back to fundamentals computer science. Go deeper and explore beautiful mathematical concepts behind programming. Refresh your lambda calculus, read about type theory, explore issues related computational complexity, study how people model parallel computations, dig into correctness proofs, etc.