Have you figured out what you hope to gain from the time record?
Work takes a lot of time: email, PPT, meetings.Life takes a lot of time: movies and TV dramas, browsing mobile phones.
You don't have to use time records to find your most time-consuming part, because you know exactly what that part is, and you can find it just by imagination. The point is, even if you know it, you won't do it. So the problem is not "record" but "execution".
If you just wait, the problem will not go away, what will happen is that you get older.