SCE Eagle1

I am so lost and confused in this whole ssdi and va. My DAV rep tries to talk me out of applying for an increase but I told him to anyway and went from 30% for anxiety to 70% PTSD with anxiety. now at 100% schedular. My question is can and/or should I apply for SSDI and what are my chances based on what I have stated already. I have 11 different disabilities due to injuries and surgeries from military service. I continue trying to work but have had to quit 3 jobs due to the stress and disabilities :( I love working but struggle to keep working without causing more pain and hurt on myself. any ideas?