Blue quartz crystal is all about self expression in the form of creativity. It helps one to become a better communicator with regards to the things you want, need and deeply desire. 
When important life experiences happen, it requires a certain level of awareness to be able to analyze and process them in a healthy way. Blue quartz can provide this awareness on your behalf, which will, over time, train you to be a better perceiver of your own life. 
Blue quartz is also a stone of immeasurable forgiveness. If this is something you’ve been struggling with, then having this crystal as a daily companion may help with your progress on the matter.