The habit is a tricky question. If you ask some religious they will tell you that it is not necessary and that it was the garment worn at a particular time in history, but it does not really add or take away from the religious life.
If you ask others, such as me, we believe that the habit reminds us of who we are. My grey tunic reminds me that I’m a Franciscan and that everything I do and say during the course of a day must be consistent with the rule of St. Francis, his vision of the Gospel, his vision of the Church and the world, his vision of brotherhood and his desire to love Christ crucified above all things, people and places. It reminds me of my special place in the Church and of the fact that I must be brother to all men as Christ was the first-born of many brothers and sisters. It also serves to remind me that I belong to Christ, not to me. That I am but a number in a larger family of brothers and sisters who follow Christ in the manner of St. Francis of Assisi.
The habit is a sign of my covenant with Christ, as the wedding band is a sign of the covenant between husband and wife.
All this being said, the habit does not make me holier. The habit itself it holy, because it is a sacramental. But it reminds me that I am not holy, but I must become holy, because I was called to holiness as are all men and women.
I can’t see how wearing a habit is going to help you discern your vocation. Generally, the habit is taken on when you have discerned a call from Christ to live in a particular manner. You put on the habit to keep you focussed, to remind you that you must remain on track. Christ has called and you have responded. The habit reminds you of this mystery that no one can explain.
But if one has not yet responded to Christ’s call to live in a particular manner: Franciscan, Carmelite, Dominican, Augustinian, etc, it would seem a futile act to wear one.
In addition, not all religious wear habits. Some communities never had one, but they are not less consecrated than those who have one. I’m reminded of Mother Teresa’s religious brothers, the Missionaries of Charity. This congregation has never had a habit. Mother Teresa did not want them to have a habit. The priests of the Missionaries of Charity, another of congregation of the same religious family have never had a habit. She didn’t want them to have one either. Yet, both groups are truly and canonically male religious. Let’s assume that Christ is calling you to be a Missionary of Charity and you’re a man or a Marianist Brother (who have never had a habit), wearing a Carmelite habit is not going to be of much help. It may, in fact, get in the way of discerning a vocation to their way of life when in fact Christ may be calling you there.
I don’t see how wearing a habit is going to help in the discernment process. I would suggest that you try to live the charism of the community to which you are attracted and see if it fits you. Rather than wearing the habit.
Fraternally,
Br. JR, OSF