I have used EFT with great success since the early 90s. I use it for physical ailments and for emotional issues too.
The only time I can't use it is when others are looking/around. I may discreetly massage the accupressure points, but I don't tap in the order recommended. I wait until I am alone to go through the process recommended here.
If you go to Emo-Free.Com you will see a TON of videos and suggestions for using EFT too.