A decision can impact anyone in different ways. A decision is essentially a choice one can make.
Let's think of what one would call a bad decision. This decision would be to cheat on your girlfriend/boyfriend/non-binary partner. That choice would end up negatively affecting them. Cheating on them may end up hurting their self-esteem, it might make them wonder if they did something wrong to you even if they never did, they might start to dislike you and possible spread rumors about you cheating on them. That's a decision that negatively affects others, and one that is usually frowned upon in society.
Now let's think of a good decision. Let's say this good decision is to help a friend study for a test that they aren't confident for. This decision ends up positively affecting them. This may help raise your friend's grade, making them feel better in the long run and, possibly, affecting their whole future for the better depending on the weightage of the test and how much better it would make their grade. That's a decision that positively affects others, and one that is usually promoted by society.
