I like to use this webpage https://31.media.tumblr.com/b1406ea4...v5xlo1_500.gif

to help slow down when I get overwhelmed. I also have made recordings of my therapist doing relaxation exercises and hearing his voice helps a lot while I focus on calming.

Adult coloring books help me a lot. So does aromatherapy (for me pink grapefruit or citrus is really calming but they can be energizing for more people; lavendar is good generally and other things you'd have to research).

For me that sense that I'm feeling everything more usually means I'm getting manic. Clozaril apparently helps reduce this symptom and I've noticed this already, as has my therapist. Nice side benefit I've needed my whole life.