I'm not really sure how to explain.
Instead of trying to make the feeling go away, I embrace it. I bring my focus to what I am feeling and I sit with it. I allow the feeling the freedom to exist. But I also accept that it is coming from outside.
When I internalize a feeling it is out of fear. For example I feel sad and fear something is wrong and then I get lost trying to figure out what it is. In turn I end up holding on to the energy rather than letting it pass. I think that is why we get so tired. It has to take a lot of effort to hold on to anything especially when it is not ours.
I have found this helps even when I am overloaded. When I try to make it go away I struggle more.
The best example I can use is a current situation. I am working with this man who is struggling getting along at a new job, but I am also new to the job. Lately he has been taking his frustrations out on me. The result is that when I leave for the day I feel like the worst person in the world. I realized yesterday it was his energy I was dealing with but not at first. At first because I was trying to fight with the feeling I ended up internalizing everything, that's why I thought I did something wrong. It's funny now because as I write I realize just how much I internalized. Anyhow rather than trying to find reason with the feelings I just sat there and felt it. I acknowledged that it was not my energy. Instead of treating it like it was mine and there because of something I had done. Slowly I felt it go away.
After talking to him today he described everything I was feeling yesterday, especially the fears.
I have felt the heartbeat thing too but not for long periods of time. I agree with @hop-daddy
. Definitely go to the doctor just be sure.
Sometimes when I sit with the feeling it does hurt. In my experience, I have found that pain to be fear more than anything. I think fear is reasonable. I simply tell myself I am afraid and it is okay to be afraid and it helps. But sometimes my fear does win and I think that is also okay. I think it is important to be honest about my limits.