Chess. Almost everything useful in chess I've found I can generalize to decision making in general. It's made me better at totally unrelated things like jiu jitsu.
For example, generally, you want to make decisions that increase your options. In competitive situations you want to restrict your opponent's options.
Find the fundamental patterns of whatever you're learning and get really good at those. Often times if you learn the 15-20% of concepts that show up everywhere, you'll learn the rest of the concepts faster since they're mostly just rehashed versions of them. In chess you'd learn tactical patterns for example. Just learn the 10 most common ones and it'll help you see like 70% of the tactics/checkmates you encounter.
Look for factors that increase the probability of wins, and then increase those factors. Not everything requires an extremely precise plan. For example getting a good position in chess (active/well placed pieces, control of the center, etc) increases the probability that tactics will come out of nowhere.
Getting advantages increases your ability to get more advantages. In economics this is called the Matthew principle (I think).
Since acquiring advantages can increase one's ability to acquire more advantages, advantages "right now" are worth more than advantages later on. Essentially, it seems that advantages have a time value.
One weird thing I've noticed is that space is a super important thing to know how to use. Chess, jiu jitsu, war. Whatever that means for the specific field/context you're trying to get good at - how can you use your ability to increase/decrease space/territory (or whatever is analogous to it in this context) to your advantage? Is control of the "center" or other specific areas important in your situation?
Synergy - finding ways to combine your advantages can be very powerful. Same with finding ways to exploit multiple of your opponent's weaknesses at once.
For example, generally, you want to make decisions that increase your options. In competitive situations you want to restrict your opponent's options.
Find the fundamental patterns of whatever you're learning and get really good at those. Often times if you learn the 15-20% of concepts that show up everywhere, you'll learn the rest of the concepts faster since they're mostly just rehashed versions of them. In chess you'd learn tactical patterns for example. Just learn the 10 most common ones and it'll help you see like 70% of the tactics/checkmates you encounter.
Look for factors that increase the probability of wins, and then increase those factors. Not everything requires an extremely precise plan. For example getting a good position in chess (active/well placed pieces, control of the center, etc) increases the probability that tactics will come out of nowhere.
Getting advantages increases your ability to get more advantages. In economics this is called the Matthew principle (I think).
Since acquiring advantages can increase one's ability to acquire more advantages, advantages "right now" are worth more than advantages later on. Essentially, it seems that advantages have a time value.
One weird thing I've noticed is that space is a super important thing to know how to use. Chess, jiu jitsu, war. Whatever that means for the specific field/context you're trying to get good at - how can you use your ability to increase/decrease space/territory (or whatever is analogous to it in this context) to your advantage? Is control of the "center" or other specific areas important in your situation?
Synergy - finding ways to combine your advantages can be very powerful. Same with finding ways to exploit multiple of your opponent's weaknesses at once.