I have been thinking and working a lot with productivity lately. One of the aspects of this learning process for me has been the benefits of externalization.
What I mean is this: I by nature keep everything inside. I let things root around in my head, create a life of their own, and become monsters that are way larger and more scary than they really should be.
Any good counselor or psychologist will do this. If you can get something written down on paper so that you can look at it with some level of objectivity, you can see it for what it is and not let the voices in your head make it into a monster.
This happens in the Psalms all the time. In Psalm 88, for example, the Psalmist is hurt and angry with God because he is near death and it appears like God has cast him away (v. 14). His words are hard and bitter, and they free him (and us) to be straight up with God and not afraid of the consequences. God is a God of mercy, not wrath.
So when something is eating at you, write it down. Tell someone else. Get it out of your head so that you can look at it for real. Take it to God in prayer. This process will be helpful to you, whether you are talking about the big things of life or the nagging thought that you need to call and make a dentist appointment.
Be at peace, friends. Let it out!