Why's that, Angela?
I second both the EFT and cognitive therapy suggestions (though part of EFT is cognitive therapy). I haven't repeatedly used any formal techniques, though I have tried out and had some success with many. Looking at my successful changes of belief from a high level, all of them have come from learning to accept reality before trying to change it.
There are many ways to accomplish that, and I highly doubt that any one method could be truly called superior, mainly because some people's perspectives are more in tune with certain approaches. So give everything a try and stick with what works best for you
I'd also suggest meditation anyway, to everyone, regardless of whether or not you want to change beliefs. Mental health is a big issue these days, and meditation is one effective way of staying in good mental health.