Since last summer i put a series of repeating activities on my calendar, one for every day of the week. Their main effect is reminding me that my free time could be spent on personal prpjects that do not necessarily need to lead to something public.
It also encourages intentional boredom, as opposed to scrolling. I don't know if it improved my life a lot, i end up ignoring the suggested activities most of the times, but it helps me keeping that frame of mind, and it probably allowed me to put effort in a few things i care for.