I too am asking myself the question of "how do we know God's plan for us?"
I am currently discerning the Priesthood, but in it all I have a love for a girl that drives me completely crazy. I search in prayer asking what I need to do and looking unto God. I'm in college, I pray about 3 hrs a day and meditate on the word for probably longer than that. One thing that I learned from St. Ignatius of Loyola is that contemplation is one of the keys to hearing God's voice and fully understanding. I would agree with just about everyone here in that God calls you to something greater, to become a role model, just like your parish priest, you become a role model for your family and friends.
As a college student, I have been to some interesting places, one of the best places is Morocco, where I influenced several young Muslim teenagers to question their faith and ask the question of "who is Christ?" Living that life of monasticism may not be available, but what you are called to be is to be the Christ, the Head of your family. For as Christ is the Head of the Church, you are the head of your family. You, along with your wife, are the spiritual guides of the family, showing your children the beautiful joy of God, the love of Christ and a hope that can never be truly imagined through the blood of our Lord Jesus. As such, he calls you to prayer, to contemplation and to meditation on the scriptures and on what he has to tell you.
Christ has taught me well, for years I never stepped foot in a church, I never did a single thing but listen to what God told me through the scriptures and through the Holy Spirit. When I entered back into the protestant church I found myself uneasy with their doctrines, I felt outcast and alone. God showed me the Catholic church and ever since then I have never been more at home. It is my family, I spent this Christmas, a way from my family in quiet prayer and contemplation of what God has in store for me. Although I have been given no guidance on my priesthood or about this girl I've fallen for. I know that Christ leaves nothing unanswered and I understand that he is going to tell me when I am ready. Until then, I play my part in my circle of friends, I preach with such ferocity that I have seen some of my friends relationships with God become great. Its not about what we say though its what we don't say.
Your calling, seems to be great, a true vocation of Marriage, where you are the Head of your family, teaching and giving guidance to your wife and your children. You may never obtain a monastic life, but that availability of Prayer, Meditation and Contemplation is available for all, not only those who are apart of the Monastery.
God Bless you Brother, My prayers stand with you.