Not only used for relaxation and to clear the mind, meditation is also a great way to heal yourself and be free of the past neagative feelings and hurt that you have experienced before and currently. Allow @DeviSawh to guide you through the basics on mediation by self-observation:
One of the most peace producing and joyful methods of meditation I've used involves seeing what lies within. This means the same as becoming aware of, acknowledging and accepting thoughts and feelings through the process of self-observation. For me, this is not always easy to do but keeping a pen and notebook with me during meditation makes it easier. I write down thoughts, feelings and any sensations I had during meditation.
One of the goals of self-observation is to look at what you are thinking and feeling, uncensored.
Devi continues, clarifying the process a bit more:
When using this process of self-observation, it's important to understand that it's really about acknowledging and accepting whatever arises within you. It's also important to be watchful for the pleasant as well as the unpleasant things that may arise. It's best to be open to anything. Regardless of what you experience, the key is to acknowledge and accept them all.
I know how very difficult (at least at first) it is to delve willingly back into those negative or scary emotions, but you need to remember that you are not experiencing them over again but merely observing. By doing so, not only can you heal old wounds and revel in the positive experiences, but you might just learn something amazing, too.