The principles that guide my life, or at least are my ideals and goals, can probably be summed up by 'I am one of His people, one of His children, who is growing up to look like Him, so I better act the part.' I am one of His children, and He is teaching me to grow into His image. Thus, while I might not have much, if any, of His spirit, lifestyle, and personality, I will grow into it. I will not sin, and will have overcome, become His perfect kid, in every respect being how He want's me to be. (Though, frankly, I'm a long way off from that goal.)
Like I said, this is my goal. Most often, I don't actually know what I'm doing, and make a halfhearted decision, or somehow find myself doing the exact opposite of what I know I should, God help me. Often, or more than often, I choose to go the way that benefits, usually short-term, myself, which is disregarding of anyone else, and end up hurting them, and later myself once I find out how it affected them.
So, all in all, I try, or want to try, or want to want to try (Yes, that is possible) to be as much of a mirror being to God that I can get. I know that is what He wants me to be, and has helped me a lot on that path, but it will take a long time.