Some people and some spiritual schools think asceticism is necessary for spiritual development.  Asceticism generally meaning that they withdraw from all the ways of the material world, not owning property, eating only minimal food and a bland, simple diet, owning very little clothing, etc.  
    We in the International Community of Christ don't think that extreme approach is necessary.  For one thing, it would be nearly impossible in the western world to find people willing to do it.  But withdrawing completely from the material world isn't necessary as long as you practice spiritual discipline.  You can have a regular job.  You can eat regular foods (with a few exceptions).  You can own nice cloths.  You can even have a glass of wine!  
    But, while you don't have to withdraw from the world, you have to avoid becoming too attached to it.  You have to make those spiritual practices top priority and, when you find that something in the material world is interfering with your spiritual development, reduce or eliminate it from your life.  And, thanks to the discoveries of modern science, particularly in the field of quantum physics, we are learning that the separation of the physical and the spiritual is largely an illusion and they are really just different forms, or different speeds, of the same thing, which is Light.