Successfully applying grounding skills will help you get back into your body...it works for a lot of people...
But I think that you also suffer from body dysmorphic disorder... This also needs behavioral psychological treatment. Because it causes compulsive and wrong thoughts about the body, which causes increased anxiety and increased dissociation intensity....
good luck.
These tools will help you adapt and self-recover....
B.D.D
D.I.D
Yes, I agree with you... Use this journal. It contains worksheets to help you recall past events and link them to reality.
Keep moving forward and don't give up.... wish you all the best
Use this tool for self-help.