I found out, that sometimes when I change the activity, I can not fit to it and I still think about the previous one. For example, when I am really excited due to a call (or great weekend), it is hard to start focusing on another activity. Or when the things went wrong in the work, I cannot enjoy my time with family in the evening, the bad feeling from work is still there.
And this kills my productivity: if the first activity in the morning was not so successful as I expected, I cannot focus very well on the next one. This makes my frustration bigger and bigger and my productivity goes down.
How to switch from one activity to new one without the influence of passed activities? How can I clear my mind and calm down my emotions to be fully focused again?