There is a beauty about prayer journaling. First things first the most important thing about prayer journaling is having a wonderful relationship with God our Father. The word says in Philippians pray about everything, here is the scripture.
Philippians 4:6-7
6 “Don’t worry about anything; instead, pray about everything. Tell God what you need, and thank him for all he has done. 7 Then you will experience God’s peace, which exceeds anything we can understand. His peace will guard your hearts and minds as you live in Christ Jesus.”
If you have something on your heart, or something you really care about there is no harm in praying to God about it. It is the most beneficial thing you can do. God is open to your every feeling and care, He wants to know.
When you prayer journal you also need patience. Here are almost 60 prayer journals accumulated over the last 6 years that contain all kinds of prayer petitions and discussions with God.

There is a scripture that states that the battle is never ours but the Lords. Here it is.
2 Chronicles 20:15
“And he said, Listen, all Judah and inhabitants of Jerusalem and King Jehoshaphat: Thus says the Lord to you, ‘Do not be afraid and do not be dismayed at this great horde, for the battle is not yours but God’s.”
We must not act in our own strength when a situation has come along, where injustice is present, unless the Lord states that we are to do something, however, one thing you can do is PRAY! Pray from your secret place and then sit back and watch diligently. This is where the patience comes in.
One prayer that has been consistently prayed for in the 6 years worth of journals was a controversial decision made in a church. Instead of voicing opposition to human leaders, we voiced the concerns to God. Over the last 5 years it has been amazing to watch God at work through the prayers spoken and what the outcomes were.
Prayer journaling reveals truth, there is much revelation to be found in prayer journaling that confirms God’s word. The problem we have is God’s word can be interpreted in ways that suit humans, for another word, manipulated. Prayer journaling confirms that God’s word does not change and you yourself through relationship with God will have concrete evidence that this is true, through confirmation of prayer. It will help your faith, rather than be blown from shore to shore with all the different theologies that are out there, especially the toxic Christian content that can be found on the internet, from YouTube videos etc.
To conclude. Through having deep and intimate relationship with God through prayer will help you have vindication, why? Because you will see directly from God what the outcomes were, and you did it in a way where the battle remained the Lords and you honoured scripture by praying about everything.