Even if there are great levels of predestination in God's Plan, there still remains within that predestination a great deal that depends upon us and our will.
Although, in the overall picture, things are universally established, and foretold via God's prophets and seers ( " Surely the Lord GOD will do nothing, but he revealeth his secret unto his servants the prophets ." (Amos 3:7) ) we still have our part to play which will determine our placement in that great Plan. It is in the exercise of our majesty of choice that this is determined.
Some say, " Well, if God wants me to do this or that He will make it so that I can perform the task easily, it won't be too hard on me or the sacrifice greater than I am predisposed to give." When Jesus came to the gravesite of Mary and Martha's brother Lazarus (John chapter 11), what did He say ? " Move aside, I am going to do all the work and perform the miracle of raising the dead as well. " ??? No ! Right off He said, " Take ye away the stone ". In essence He was offering them the opportunity to exercise their majesty of choice.
They didn't have to do it, they could have thought, as Martha said, "Lord, by this time he stinketh" and decided not to have to face that. They could have, but didn't. Instead they exercised their majesty of choice and put their faith into action. This all happened first, and then came the miracle. Had they chosen not to roll away the stone the result would have been ; no miracle and subsequently no great testimony to God's credit.
So, your choosing to exercise your majesty of choice will not change the end result of God's great Plan , although it certainly can change several of the details along the way.
Exercising your majesty of choice and selecting to show kindness and love to another is what you can do. Converting the soul to a life of faith and Salvation is the miracle that only God can do. But you won't get the miracle until you first demonstrate your faith by exercising your majesty of choice. You don't have to, but then there won't be a soul that has had the opportunity of becoming a great testimony to the credit of God, and He may require an explanation as to why not .
Make a difference. Exercise your majesty of choice. Don't wait for someone else to do it for you. This is something you do yourself.