The rod of iron is detailed in Rev. 2:
26 And he that overcomes, and keeps my works unto the end, to him will I give power over the nations:
27 And he shall rule them with a Rod of Iron; as the vessels of a potter shall they be broken to pieces: even as I received of my Father.
Always seeking the Truth, I asked God for an experience of the rod of iron. He led me through an experience of writing a book to try to fix Congress and attempt to sell it to members of the Congressional Prayer Caucus. After only a few phone calls with no interest, I became so frustrated I prayed for Jesus to shake up Washington DC. Jesus immediately answered the prayer with the 2011 Virginia Earthquake. That experience taught the true meaning of engaging my whole being, mind, emotion, will and strength in prayer.
Years later He led me to read Rev. 12:5-12 and I realized the purpose of the rod of iron is to cast out Satan, as I was trying to do with Congress. In fellowship I learned other miracle acts of God qualify to shepherd nations in addition to earthquakes such as hurricanes, tornadoes, floods, and lightning. It is a mercy of God to shepherd nations with the rod of iron, conveying His will yet retaining people's free will, instead of directly controlling people like robots.
We must practice exercising the Rod of Iron with Jesus individually to master it, so when it is time we can join together and as we are about to apply the rod as one man, it results in ascending to heaven.
So the main lesson is the Rod of Iron is much more serious reality altering prayer instead of the luke warm prayers that simply make people feel good. I realize not everyone will be given the same experinces by God so only use these examples to motivate you to get more serioius with Jesus in your prayer life.
A more recent experience was in my living situation next to a beach where lots of noisy 2, 3, and 4 wheel motor toys would make it hard to even think, I started praying silently for it to stop every time I was interrupted. Eventually God gave my sister in law to hear my silent prayers and my brother organized a political campaign without my physical involvement, to make such noisy recreational vehicles illegal on the beach, Eventually the noise stopped, for which I thank Jesus.
One area to practice lighter weight rod of iron prayers with is yourself. If you have any inappropriate feeling in your body, cast it out of you praying for more of Jesus blood or Holy Spirit to take over that. As Revelation says they overcame Satan by washing their robes in the blood of the lamb and not loving their soul life unto death.
Write a list of the best prayers that Jesus gave you an answer to so you can remind yourself to think on His things instead of your ordinary human things. I've never had any noticable result of fasting from food. But fasting in the sense of having the Internet taken away got me to pray more seriously about everything until I got to experience Jesus' help.
For example, I was told in Spirit that the video of a person talking got people to pay more love to him than to God. But the need to get the man child started with a committment to Jesus, not other ministries, may include having everyone do a video of reading Jesus' words, which would overcome the problem of loving anyone unequally.
The news and other media is a great source of information on crimes you can pratice praying against Satan in. Everything from Government incompetence and malfeasant sex to murder. You may choose to turn off extremely bad shows, or you may choose to pray to fix them or pray them off the air. But you must pray every prayer with Jesus first, asking Him what He wants to cooperate with you in praying. Excercising the rod of iron without Jesus' approval and guidance is a sure way to a wrong result.
So be careful you are praying about Jesus' concern because Satan will tempt you. I was not sure about some other rod of iron prayers because an angel would answer me. God's own answers are much more assuring.
Those who develop their faith to use the rod of iron will get to follow Jesus in Rev. 21:
14 And the armies which were in heaven followed him upon white horses, clothed in fine linen, white and clean.
15 And out of his mouth goes forth a sharp sword, that with it he should smite the nations: and he shall rule them with a rod of iron: and he treads the winepress of the fierceness and wrath of Almighty God.