This phrase is what Kristen Johnston uses in her book "Guts" to describe what can happen when we choose to not talk about our issues or our past and to instead keep everything locked up inside.
Besides all the negative health issue of keeping strong emotions bottled up, mental health issues form as well ~ stress, anxiety, depression, social anxiety, phobias, anger issues, co-dependency and the like.
Get your feelings out any way you can! Writing in a journal is a good way, blogging about your issues, or even doing a video blog! There are places and people who can try to help as well: talking in groups, talking with a confidante, using a counselor or therapist, talking with your religious leader, or the like.
When you get the information 'out' of you, it helps to heal and free you from the emotional pain and trauma; much like the process of removing an actual piece of glass from your leg. Once the glass is out, the wound can actually start to heal!
I hope this helps you better understand why it is so important to find some outlet.
Who am I?
I have been called "Sirthinkalot" and "The mender of souls." I am passionate about helping people live fuller and happier lives!