Let's say you have a pain in a hard to reach area of your own body. How can you use sword fingers, etc. to break up blockages and thunder palms to supply energy to the area? How can you even "scan" all of your own body to find blockages since you can't reach certain areas? How can you open C7 in your own neck?

You can use your intention - it is good enough.
You can also visualize yourself moving around you energetically and using sword fingers or thunder palms.
You can stand in front of a mirror and open blockages of yourself in the mirror.

Aloha Oleary25,

Do the mirror option as listed by DesrtSphinx above. Need to SF C7? Shoot right through the neck to it, rather than finding a way to twist your arm around your head.

Scan the areas of the body from the head to feet y standing in the mirror the same way. No need to twist and turn. When you find a blockage,ask questions to zero in.

Much Love, Shawn