Try doing an interesting thing instead of four boring things. I'm more entertained when I'm 100% focused on something (in my case usually programming) than when I'm doing many things at the same time
Multi-tasking splits attention and joy between all tasks while one specific task usually keeps you interested. Also, similar to lugruf, it might be that you're not doing something you really find interesting and are just passing time. Do the thing you really wanna do! :3
