How many things have you had to leave behind because of the Lord’s calling? We always renounce something when God calls us, obviously we renounce sin, our old way of life etc. But there is a special calling in those who leave everything to follow Christ.
In the Bible we have multiple examples of this, such as the servants of Elijah and Elisha, or the 12 disciples who left their old offices to follow Jesus. This does not mean that you have to leave your job to serve God, that is why I say, in some people there is a more than special call.
This is the case today of a former boxer who decided to give up his weekly fights after seriously injuring an opponent, for which he had to go to court and was about to face 8 years in prison.