Biological needs, hunger, thirst, need for rest and sleep, so we choose to eat, drink, rest.
We need to understand things so we decide to ask questions and do research.
If we are only really concerned about ourselves as we only have our own personal consciousness, then the choices of our will are selfish.
If we use our understanding of what hurts or what pleases us, then we choose (or will, if you like) to do for other people those things for other people.
Nobody made you ask this question, or caused you to will your fingers and understanding of how to use a computer and post your question here, but you willed to, so you did.
From the time you were an infant you chose to learn how to do things, because it brought rewards, crawling, walking, feeding yourself instead of having your mother feed you for the rest of your life.
You choose (or will) to be a Christian because you have learned Christianity has truth, and like everything else you’ve learned, it requires a choice (which involves your will or nothing would be begun or achieved) and your will to bring the choice to .action.
You have the Sacraments, the commandments, the Catechism, Canon law, the gospels, to clarify to you what is God’s will for your life, which is to use your talents, to love God above all and others as you love yourself. God’s will for your life is contained in those, and you can will to obey or not.
The basic question for your will, is do you love, or not:
are you only about yourself, or also about God and other people.