It may sound good to know that simple journaling can emotionally heal you as well. Simply penning down your thought can so recovering. As a Psychological Counselor, I use this writing technique for my client for their emotional healing. I train them how to use it in their day to day life and believe me it's so catheretic. 

Writing about our own difficulties and dreams helps us experience increased happiness, health and productivity. This technique helps in finding meaning in the mess. When you write and re-read and your writing can further deepen your understanding and healing. I have found that writing down not only helps us understand where the feelings are coming from, it also makes it easier to let go of the negative emotions. 

Many of us simply hold our emotions, storing them away in our bodies, and we become emotionally constipated, unable to let go of that which isn't helping us in any way. Eventually, when our system gets too backed up, we get sick. We can no longer function as we should. Become sluggish, unresponsive depressed.