I've had pretty good results with some physical pain issues, but I haven't had any radical transformations. Kind of like acupuncture, it provides some temporary relief, but after a while, I guess the energy kind of gets blocked or reverts to its previous flow/state. Wow, that sounds really "woo-woo", eh?
I've also had some relief on emotional issues like loneliness or abandonment, but again, there is a limited amount of relief. However, I haven't worked with a real EFT practitioner and really isolated specific issues, so I may be selling myself short.
I've used this routine and it's been helpful, give it a shot, I'd be interested in hearing how it works for you.
Also, if you don't have it, grab this - it's free and a really good reference for learning EFT.