I also change my mind a lot about other things like, losing weight when I would start a diet and that would last a few days or maybe a week (sometimes only a day or two) and then suddenly give up and realize that's not the right way to do it even though it was working and I'd do something else and it would go on and on.
Spending money. I get a thought in my head that I have to have something or I go spend 100 dollars on groceries that in a day or two I will decide I need to buy different groceries because I am on a different diet and I'm not eating these kinds of foods anymore.
I went vegan a couple times and gave away all my (recently bought) animal foods which once was actually a lot of stuff.
Right now I really want to get a printer, and I will probably end up buying it even though I don't really NEED it and I can't afford it. I am really impulsive especially when it comes to eating out or getting deliveries of take out. I look at my bank statement online and half of it is take out. It's insane. Once I decide I want or need something, I HAVE to have it and I am in a really bad mood until I decide I will get it. (sometimes I try to talk myself out of it)