Just wanted to add on that lately I’ve been doing a technique I picked up from a friend who isnt into mnemonics, just gets bored often. He imagines doing something, for example building a car. And he does it in huge amounts of detail, your brain usually likes to skip, you grab this and suddenly its inside here. But when you imagine every movement, how would gravity feel like this, how would this work etc, its extremely relaxing and focusing.
Also saw a video of a POW couple days ago, in a movie about happiness from a psychology POV, he did this while trapped for 8 years in a Korean prison. He imagined building the house he would make after getting out. He would lay out the plans perfectly in his mind, would count how many bricks it would take, how many nails etc. Then when he got it perfect, he would change something, like what if this fireplace was moved to this room, how would everything change etc.
One of the posts Josh linked to had something similar. Being focused on walking through some woods. By walking(mentally) through the woods, you’re not trying to get from a to b, you’re focusing on the journey. Moving your feet, how would you step over this, trying to get into as much detail as possible. Its a great technique for me. Its very memorable too.
It also helps me practice visualization skills. Being extremely focused, even trying to hear what it would sound like, stepping on leaves, or hammering a nail…