I work at my own startup where I manage my own time and usually, the best time to read/learn is when I get stuck in the process of building something.

Reading hacker news, stack overflow or even researching ideas on how to get through the problem in what I´m building allows me to "merge" learning and building.

It´s hard to build stuff in Erlang and learning Lisp at the same time, for example.

Try to merge both activities in some way and you will be good.