If you see a person in expensive clothing or jewelry of their own possession preaching the Word, run the other way.
If they own an expensive vehicle or home, they are not truly following the Way.
Why, you ask, can't a person be fully on the path while owning expensive things? Because if they had found and embraced the Truth, then they would not only have no need for such things, but they would actually shed them as quickly as possible. Look at Jesus of Nazareth. Look at the Apostles. Look at St. Francis of Assisi, who, unlike the Apostles, actually had wealth and then discarded it when he found the Way, the Truth, and the Life. Look at St. Augustine, St. Thomas Aquinas, or if you prefer, look at people who were not Catholic saints. Look at Gautama, look at Ghandi.
When one discovers the Truth, through faith and reason, one has no need or desire for things of this world other than physical sustenance. At least that's what I gather from study of the subject.
Where does this leave you? I'll tell you where it leaves me: doing my best to stay on the path, but leaving much to be desired with my efforts - and certainly not yet arrived at the destination. My craving for things of this world are very strong, and I continue to devote way too much of my time and being to attaining and enjoying them. I see the error of this way, yet choose to rationalize my actions as being geared toward providing for my family or trying to make the world a better place. That is why true spiritual people who are called to serve God and nothing else cannot have spouses or children; the conflict of interest is too much to resolve, and either God or the family will be short-changed. I'm not sure what the correct course is, which is how I know I haven't yet arrived at the place I seek - for if I had, then I would be absolutely sure of what my priority should be, and would be able to act accordingly. My family would not only understand, they would embrace and join in the decision themselves, for themselves. But it is not something I can ask of them or anyone else, nor am I ready to do so.
So I will continue along the path, clinging to both God and my own life, while hoping nothing ever forces me to choose one over the other, as has happened countless times throughout history going back to the martyrs and to Jesus himself. Let's hope that's enough for now.