The ease or difficulty we have with connecting to others can be understood as "attachment styles," as they are referred to in psychology circles.
Our primary attachment style is often determined by how we learned to connect to, or detach from, our caregivers- depending on how healthy, disconnected, or overwhelming those relationships were.
This article by Dr. Jon Caldwell talks about how our attachment style may be connected to how we practice (or don't practice) mindfulness.
He and Phil Shaver published a study that concluded that people with a healthy attachment style report more ability to practice mindfulness, and that people with avoidant and anxious attachment styles have different reasons for having some trouble practicing mindfulness.
People with anxious attachment report more trouble with focusing because of rumination, and people with avoidant attachment spend more time avoiding unpleasant thoughts.
Mindful practice can help calm rumination, and can help you turn toward unpleasant thoughts without judgment. More than just a practice for learning to appreciate the present moment, mindfulness can help you dismantle lifelong habits you have been working around.
If your attachment style is more anxious, work more on practices to calm mind chatter or rumination. If you have an avoidant attachment style, use non-judgment or non-struggle practice to turn toward unpleasant things that need to be looked at.
Check out the article linked above, and the 16 practices tab in this app, and "attach" yourself to a mindful practice that makes sense for you!