What's your 'learn, unlearn and relearn' strategy?

In my opinion it's simple.

To gain new focus, do a role play.

Instead of applying your current knowledge, ask yourself always if there is another way.

To quote Lewis Carrolls Alice in Wonderland:

"Would you tell me, please, which way I ought to go from here?" "That depends a good deal on where you want to get to," said the Cat. "I don't much care where--" said Alice. "Then it doesn't matter which way you go," said the Cat. "-so long as I get SOMEWHERE," Alice added as an explanation. "Oh, you're sure to do that," said the Cat, "if you only walk long enough."

I have a list of tasks... Sometimes I look for a specific problem, look at all solutions, try to find new solutions - stick to the old one. Then full stop, solving another problem, procrastinate a bit, suddenly a new solution for the other problem pops up.

I usually have a college block. I scribble down my thoughts for every problem I have and I always start from scratch when a new problem arises.

And I'll try to be generic.

Many people are very specific - e.g. I must have a solution in Python / Java / ...

If I can I port sometimes specific solutions, eg. from Python to Bash, Bash to Python, Elasticsearch aggregations to SQL.

Hence the Lewis Carroll reference - the longer roads make more fun, as you learn from a broader perspective and you gain insight in the pros and cons of several technologies.