Personal Concerns and Next Steps

I am wondering how I will be able to teach mathematics to my students in a way that they will be able to understand the how and why of the problems. I am wondering this because I am not sure I know the hows and whys. I believe that I am learning more and more with this class. I have learned how to find ways to understand the standards I am going to teach. I believe that I am learning how to think through problems in a way that I can deliver my thinking to my students. But waht I am struggling with is the whole process of how can I link the mathematics I am teaching to real life... why do we need to do mathematics and what purpose does it have in real life. Maybe the answers will revela themselves when I am planning the lessons for my classes. Maybe I need to take one problem at a time and think about one thing at a time.