I love the concept of becoming a 150% person. Of course this is just a symbolic term to display the idea of making an extra effort to be 100% yourself and 50% more like Jesus, or perhaps even 50% more like a person who is willing to make a change to be like a group of people.
I also like thinking about it like be 100% yourself, 50% you and 50% Christ. This way you could describe it as deny’ing parts of yourself and your sinful nature for the sake of being as close to 100% CHristlike as possible.
Either analogy works, the concept remains the same; we need to make extreme efforts to be as Christlike, or, as much like the people we are ministering to as we need to be. It is our duty to lay ourselves down (our worldviews, our cultures gospel, our selfish desires, even our selfless desires) for the sake of loving someone. Jesus gave His life in so many different interpretations of the phrase, and we should also give our lives to the extent that we let go of who we want to be, and become who we need to be.