Clearing your head

 This is the method:

• Select problem positions with patterns you need to absorb.
• Don't waste much time with trying to solve a problem yourself. It is about the new patterns you haven't absorbed yet. Solving it yourself is about patterns you already have absorbed.
• Full understanding is the core of the method. Ignore the details that aren't transferable to other positions.
• Describe the scenarios in plain language. Clear the square, double attack, annihilate the defender et cetera. This is about conceptualizing the scenarios with the aid of system 2. System 1 looks over the shoulder of  system 2. More precise: both system 1 and system 2 are focussing on where your attention is.
• Fiddle around with Stockfish to unearth more details of the position.
• Use spaced repetition to memorize the positions. Speed is taboo.
• Once memorized, solve the positions with your eyes closed.

The last step is my latest discovery. It will clear your head and cement the patterns. You don't need to see the exact position in your head, you only need to be aware of the concepts that govern the scenarios.