I had about 10 x 1 hour sessions with an EFT specialist about 4 or 5 years ago and was amazed that it actually worked.
You can do it yourself, but I would recommend one session with an EFT specialist and tell them that you want them to show you how to do it for yourself. They charge around £50 per hour. Not sure about how much they would charge in the States.
Do it yourself EFTers might disagree. I do EFT myself now (not on others .... just on me and my son).
It works! I don't know why it does, but it doesn't matter why ... it just does!