If you are looking inward for causes of unrest in your mind; one option is to consider the three actions of the wounding cycle.
If you have been abused, abandoned, betrayed, ignored, neglected...., the first consideration is to admit that you have been hurt, that the experience did happen. If you are self-protecting and making it not real and denying the depth of your pain from the original experience, you will never be able to fully forgive or let go of the attachment to the event. You do not have to relive the event over and over to let go of it but you must feel it as deep as it went in.
The second consideration is how you are doing the same thing to other people; this will either be directly or indirectly. If you still have some attachment to your wound, you are wounding others in the same way. You must find out how you do it, and this may take some time to catch yourself doing it. We really do not want to hurt others, but in times of stress we do! You need to be aware of what you are saying and doing, or not saying and doing. By not saying or doing you may be allowing hurt to happen in your life.
The third consideration is how you are doing the same thing to yourself. The deepest pain and suffering is from what we do to ourselves. Actions or inactions create the loss of love toward others and ourselves. Again this may be very subtle, or right in your own face kind of actions. I mentioned this cycle in a monthly focus several years ago, and recent events in my own life reminded me of the truth that the wounding cycle functions, but when we pay attention and are very honest with ourselves we can detach and be happy again.