Joyce Meyer teaches heretical "Word of Faith" doctrine; that's nothing new. But she also appears to be violating Missouri law by claiming to have an earned Ph.D. from "Life Christian University" in Florida. LCU has given these honorary degrees to other WOF teachers like Kenneth and Gloria Copeland, Benny Hinn and Rodney Howard Brown; as well as fraudulent historian David Barton.
Here's an important article from Warren Throckmorton (with links to more articles) about the deception being advanced by Meyer and LCU: Evangelist Joyce Meyer Claims Earned Ph.D. from Life Christian University, Missouri Law Forbids Use of False and Misleading Degrees
For those who think it's mean, judgmental and unloving to criticize Joyce Meyer (or any other popular teacher) here's something just for you: Shocking Stuff You're Not Supposed to Know.
If you're having a knee-jerk reaction to try and defend Meyer, check out: Confirmation Bias: Why You Are Protecting Your False Beliefs.
Finally, here's an article that will help you be more discerning and a lot less gullible: Defusing Demonic Dirty Bombs.