"positive obsessions/hyper fixations" that last a couple of days?

I know the terminology is wrong, but hopefully you get what I mean. do you even get excited about doing something BIG, start the process and crush mid time? like, I want so bad to go back to school rn (I dropped out). I rationally know that I dropped out for reasons that I haven't worked on yet so the outcome would be exactly the same this time. still I'm looking at applications for online classes... tell me I'm not alone, please