A little advice from our Savior about prayer:
Luke 18:1-7
1. And he spake a parable unto them to this end, that men ought always to pray, and not to faint;
2. Saying, There was in a city a judge, which feared not God, neither regarded man:
3. And there was a widow in that city; and she came unto him, saying, Avenge me of mine adversary.
4. And he would not for a while: but afterward he said within himself, Though I fear not God, nor regard man;
5. Yet because this widow troubleth me, I will avenge her, lest by her continual coming she weary me.
6. And the Lord said, Hear what the unjust judge saith.
7 And shall not God avenge his own elect, which cry day and night unto him, though he bear long with them?
I believe that the message from Jesus Christ in the above parable is given in the following Scripture.
1 Thessalonians 5:16-18
16. Rejoice evermore.
17. Pray without ceasing.
18. In every thing give thanks: for this is the will of God in Christ Jesus concerning you.
I will tell what I pray about; whatever troubles me!
And to the Biblicist I say. I know your pain. My wife of 58 years has dementia and I fear it will become Alzheimers. I have seen what Alzheimers does. I pray for her throughout the day and especially when we are in bed. I ask God for healing for her, that I would continue to love her as Jesus Christ loved the Church, and that He would give me the strength to look after her. Like the widow above I will continue to pray this way as long as God lets me live with mind enough to pray. Sometimes during the day, noticing her condition, I simply cry out to God!