I think one problem is that some people think that everyone is called to do the same thing. Is everyone called to be poor for the sake of Christ? Is everyone called to fast food? The point of fasting is not to earn points or to prove something to God. Fasting is not a hunger strike to try to force God's hand. The point of fasting is to crucify your flesh so that your spiritual interaction with God can become more prominent. If fasting is not a big deal to bbyrd, then is it really crucifying his flesh if it's not really a sacrifice? So maybe people who aren't even phased by fasting need to find another way to put their flesh down.
What about everyone being called to be poor? Did you notice that Jesus didn't go around telling everyone to sell everything they had? He only said that to this particular young man because Jesus looked within him and saw what was holding him back. My point is, it's not cookie cutter. We're not all called to be clones.
1 Corinthians 12:14 For the body is not one member, but many.
1 Corinthians 12:15 If the foot says, “Because I am not a hand, I am not [a part] of the body,” it is not for this reason any the less [a part] of the body.
1 Corinthians 12:16 And if the ear says, “Because I am not an eye, I am not [a part] of the body,” it is not for this reason any the less [a part] of the body.
1 Corinthians 12:17 If the whole body were an eye, where would the hearing be? If the whole were hearing, where would the sense of smell be?
Sure, there are people called to poverty to show the world that it's not about money; it's about Jesus, and happiness doesn't come from money. But I don't believe everyone is called to that. I personally know of a couple who is very well off. They owned a huge house on a lake, with a fully furnished basement made into its own little apartment. Some people might look at them and despise them because they're fairly wealthy. Should God's people live that extravagantly. But if you were to sit down and talk with them, you may be surprised. There heart was to use that as a retreat for burnt out, or weary, ministers, missionaries, and Christian brothers and sisters who just needed some peace and rest. They would take people in and show them the gift of hospitality. They would love on them, and minister to them, and people left there refreshed to go back to their own places in the Kingdom.
In the unity thread, someone talked about how churches should be to where if someone has a need, the other members in the church kick in and help their brother or sister out. The whole key to that working is that there needs to be people who, not only are not in need, but they have excess to help people out.
Sometimes the Lord will call people into a radically different lifestyle than what they are used to. But I don't believe that's always the case. I believe a lot of times, the Lord will keep you in your current lifestyle, and radically change your mentality so that whatever you do is now for the Lord, and you use what God has given you to do the Lord's work. It changes from being mine to being His, but He has entrusted me to be a steward of what is His.