So Mario Nistri, are you saying that i should stick with concentration practice until i can remain mindful all day?
Actually, if you are relatively new to meditation, noting 80% of the time is very good.
However, I'm saying, what you do should depend on what you want to achieve.
If you want SE, go for it.
If you want jhanas or somekind of psychological wellbeing, my suggestion is to do something else.
Something that is likely to achieve the last 2 and can be easily practiced 24/7 is
the 6R method, expecially if you go with metta (I linked the whole book,but if you areinterested you actually have to readonly the chapter with the description of the of the 6R, the metta variation and walking meditation for daily life)