God has predetermined who will be saved and who will be damned. This means that God has already decided whether you will be one of the elect, who are saved, or one of the reprobate, who are damned.
Calvinists believe that God's predestination is not arbitrary. God has chosen the elect based on his own good pleasure. This means that there is nothing you can do to change your eternal fate. If you are one of the elect, you will be saved no matter what you do. If you are one of the reprobate, you will be damned no matter what you do.
Some people believe that this view of predestination means that God is restraining our ability to make uncoerced choices. They argue that if God has already decided our eternal fate, then we don't really have any free will.
Calvinists, however, would argue that our choices are still our own. They believe that God has given us the ability to choose, even though he has already predetermined our ultimate destination.
They would say that our choices are still meaningful, even if they don't ultimately determine our eternal fate. Our choices can still affect our lives in this world, and they can also reflect our relationship with God.
Ultimately, whether or not you believe that Calvinism restrains our ability to make uncoerced choices is a matter of personal interpretation. There is no one right answer.