The closest answer is "none of the above". And before you throw up your hands, let me explain.
First of all, we have to remember that while we are going through Life under the constraints of linear Time, that God is the Creator of Time, and thus He is not bound by it.
What that means is that no, we cannot "change " God's plan for us, but we can come into agreement to be led by Him, and also to discover the wisdom, the love, and the good examples that He has placed into our lives by His mercy and His grace.
Because God is outside of Time, He knows both the problems and struggles that we will be presented with in our lives.
And so because He has that knowledge, He can and does place into our lives things to help us, people to guide us on our way, and also an alternative pathway away from those problems and struggles that we can choose to take.
There is also the other possibility that there will be random problems and struggles that we are presented with in life that come to us as the result of other people's actions against us.
This is a different category, but God also works in these situations.
Sometimes these things simply come to us because the end of our allotted time on this Earth is at hand, and God in His mercy is easing us towards our final days.
Other times, these things happen because God in His mercy is sparing us from going thru something even more disastrous or upsetting down the road of Life that we would find ourselves right in the middle of, and with no way out.
And lastly, sometimes we are simply on the wrong path.
When that happens, God can use/direct other people to say a right word to us, or if we are stubborn and prideful, to forcibly correct our direction into another pathway.
There are multiple examples of these times in the OT. Every time there is a directional change in an individual's life (or a change directed towards a collective group of people) you will always see God's hand moving in and directing the course of that change.
The Parable of the Good Shepherd would be an excellent example of this last situation, which can also be observed in the Great Flood, The Exodus, various historic persecutions, etc.
You can see and understand these kinds of times more easily when you view them as "forks in the road."
So to answer your question above, the best prayer to make to God all your whole life long is the same one that Jesus said in the Garden of Gethsemane, and His last prayer when He was on the cross:
"Thy will be done".
Those 4 words are in accord with WOF, and they will also provide you with the best of God's guidance and His provision for your life.
May God bless you!