Jesus calls them around and points out that whoever wants to be first has to be last and servant of all. In Mark 10 they meet the rich young man who would not give up his possessions. When Peter points out that the disciples had given up home and family to travel and spread the good news, Jesus agrees and reviews the teaching about the first being last and the last first. To live so that people will know that we are his disciples by our love for each other is not easy in today's world, but it can be done. Of course, you cannot be intimate friends with everyone, so after you have chosen people with whom you would like to develop such a relationship, try the following to form friendships.
Friendships take time.
Your response may be that you just do not have time, that you have to prioritize your schedule. If you believe it is important for people to recognize that you are his disciples, you may want to start scheduling your priorities. Time allotted each week to developing missionary relationships will make you more effective, less likely to quit missionary work, more likely to be happy, and less likely to become ill. One can live for several weeks on one good compliment. However, most of us go for months without giving or receiving any.