Truth and Gray Areas

When I was younger I saw all things as gray. What you did was up to you and what I did was up to me. We can all be right, was my motto. As a young Christian I saw more in terms of black and white than I do now. I emphasised objective truth to the detriment of subjective truth and experience. As I have matured somewhat on the subject, I am more sympathetic to the subjective than I was.
Over the last few years I began to allow for the possibility of there being legitimate gray areas in knowledge as relates to truth. But what I was not prepared for and what nobody told me (at least I was reluctant to hear it if they did) was that there is not only gray areas in life, but there are various shades of gray! What I speak of is not the fundamentals of Christian doctrine or of life, but concerns that are more controversial, where there is not much light given to know the truth of a matter with certainty.
Naturally there is an answer one way or the other, but arriving at the truth of a matter is at times impossible. Sometimes the fault lies with us and not that there is not enough light on a subject. We simply see gray when we are too ignorant to come to the knowledge of truth. The mode of baptism is a good example of a thing that is not gray, but is surrounded in controversy. While the use of alcohol in the life of the Christian can be a very gray issue, even allowing for truth for one and not for the other, depending on the persons conscience.
If you are like me and subjectivity is regaining a hold back in your life what are we to do? Keep a good balance using scripture as our guide for life.