i do not have it fully under control,
never able to stick to the planned time
(and sometimes just way too long)
but i grant it to myself cause it's important to get to know me
so even if i would have to cut the wp-time a bit; i'd have to convince myself first.
and for the time being i'm not convinced.
(as long as it doesn't exceed a certain time though, i had a few days like that,
if it would go that direction, it would become a problem, but real life is always
very present so the chance that this will happen is rather small)
i also have trouble stopping anything that i'm doing, not only things on a computer,
i often need strong extern signals or a habit to stop me.
(my husband knows that and deals with it, and teaching is a very regular and extremely timed job)