This is going to sound new-agey as crap. It isn't, though, these techniques have been around a long, long time.
Here's what helped me heal, in rough order:
First, I learned to breath correctly. In through the nose, out through the mouth. I also learned how to time the breaths with my internal clock, you know that "beat" that you can feel? That. Breathe in sharply through the nose and fill your lungs, about a count of 4 or 5 beats for me. Hold it for a beat of 1 or 2, then open your mouth and breathe out more slowly, about a count of 8 beats for me. Expel all of your air comfortably, not exhaling to the point of emptiness, but almost. Do this about 10 times to charge your body with oxygen and then relax into a more gentle in through the nose out through the mouth routine.
This is the first step in practicing mindfulness.
Next, sit in an armchair in a dim room. Get situated, feet flat on floor, arms resting on the chair arms, relaxed. Do your breathing exercise. When done with 10-ish breaths start taking stock of your body. Start with your left foot. What does it feel? Do you feel pressure against the floor? Any pains? Acknowledge the feelings relax the muscles, and move on. Right foot, same. Left lower leg, right lower leg. Left knee, right knee. Left thigh, right thigh. Left hand, right hand, on up to the shoulders and then switch to our torso. Move your inner focus up your torso, then into your neck, then your head.
Next focus on your hearing, then smell. What do you hear? What do you smell? Acknowledge those things.
Finally, focus on your thoughts. Acknowledge your thoughts. If something is troubling you picture writing that thing on a piece of paper and then letting it go into the wind and out of the room.
What this is doing is helping you be "in the moment." You consciously choose to ignore what other people are trying to get you to do and instead focus on you, what you're feeling, what state your body is in.
There are old religions that make a point of recognizing the difference between your thoughs, your emotions, and _you_.
You aren't what you _feel_ emotionally. Those things are reactions outside stimuli, and often knee-jerk reactions. Learn to recognize the feelings and let them go. One technique that helps is the chair exercise above.
Another thing that helped is recognizing the difference between thoughts and feelings. Something that helps there is to put the phrase "I think" in front of the words that describe what is going on with you. If "I think X" doesn't make sense then that thing is an emotion. If it does make sense then it is a thought.
"I think angry." Makes no sense. That's an emotion, not a thought.
"I think sad." Makes no sense.
"I think that you don't respect me." Makes sense. That's a thought, not an emotion.
Hope some of this helps!