Wayne Dyer claims to be inspired by various books, including the Gospels, and talks about praying with intention to make your prayers come true.
Wayne Dyer puts a lot of emphasis on these verses:
>12Truly, truly, I tell you, whoever believes in Me will also do the works that I am doing. He will do even greater things than these, because I am going to the Father.
>13And I will do whatever you ask in My name, so that the Father may be glorified in the Son.
>14If you ask Me for anything in My name, I will do it.
(John Ch. 14)
Wayne Dyer encouraged his audiences to ask for anything they wanted, without stopping to ask whether what they wanted agreed with the traditional Christian idea of asking for appropriate things.
However, there is also a story from John Ch. 4:
>16 He told her, “Go, call your husband and come back.”
>17 “I have no husband,” she replied.
>Jesus said to her, “You are right when you say you have no husband.
>18 The fact is, you have had five husbands, and the man you now have is not your husband. What you have just said is quite true.”
So it looks like Jesus disapproved of remarriage after divorce. More to the point, Jesus disapproved of lots of different behaviors, but I can't think of a lot of good examples.
So Jesus said to ask him for anything in prayer in his name, but also Jesus didn't approve of some goals (like having five husbands and then shacking up with yet another man). So if a woman prays to God in Jesus' name for help in abandoning five husbands and then getting yet another man, presumably Jesus would not approve. Similarly, if a money-changer in the Temple asked God for help in cheating the faithful, in Jesus' name, presumably Jesus would not approve.
If you are experienced in Christian thought, this may seem like an undergraduate-level question. But for a lot of people, God is only important if they can ask God for help and get real help. So the problem of what things should and should not be asked for in prayer is important for a lot of people.
One way to avoid the question is to select a bunch of preachers, whether allegedly Christian or openly non-Christian, then point to them and say, "Those guys are just the 'prosperity Gospel' crowd and everything they do is wrong." That's a quick fix but I don't think it addresses the underlying problem of what kind of requests are appropriate in prayer.
Some requests seem to be very appropriate in keeping with the Gospels. Praying for food when you are hungry and praying for health when you are sick seem entirely appropriate to me.