For verily I say unto you, That whosoever shall say unto this mountain, Be thou removed, and be thou cast into the sea; and shall not doubt in his heart, but shall believe that those things which he sith shall come to pass; he shall whatsoever he saith (Mark 11:23)
As long as you're discussing or musing over the challenges you're facing, instead of eyeballing them and commanding a change, you're going to get the result Jesus spoke about in the scrip[ture above. Maybe it's a growth in a certain part of your body, and you're complaining about it to everyone around and even receiving sympathy from them; it's time to stop talking about it and talk to it! Say "Grownth, die and pass out of my body in Jesus' Name," and begin to rejoice that it's done.
Perhaps you've been having financial difficultie; it's time to speak and cause a change! God gave you a mouth so you can speak and effect the changes you desire in your life. Your words rule your life; they're what determine whether you're going to be a success or failure.