factor
Something that has an effect on what happens. Some factors help a goal; some get in the way.
impulse buying
Buying something suddenly, without planning or thinking it through.
advertising
Messages from businesses that try to get people to buy things.
peer pressure
Feeling pushed to do what friends or classmates are doing.
unexpected expense
A cost you didn't plan for, like replacing lost mittens.
subscription
A payment that repeats, like every month, to keep using something (such as a streaming service or a game pass).