Melanie,
When I first looked at your dream a few days ago I had distinct impressions but could not tie it together {this due mainly to all the responsibilities I have with our construction business}. With a fresh mind I still have the same impressions. Hopefully this time around i can put the pieces together and provide constructive impressions that you can understand {by associating my interpretation to your waking life}.

Trees often symbolize personal growth. In this light huge trees would represent important growth in your life. Christmas is a celebration of new beginnings. The friend {unnamed} would likely be a positive part of yourself. There could be connections to your high school years but could also represent the higher aspects of learning something about yourself. Cars are what get us where we want to go, the direction we should take to achieve our higher being {spiritual and creative}.

The growth/trees are covering all other aspects, even the social duty aspects. You are able to unconsciously conceptualize these aspects, storing them so they do not consciously disintegrate. What is needed is to make this unconscious aspects a reality, letting the trees/growth spill over into your actual waking life.

Can you find associations in your life, unconscious if not conscious that fit? These may be unconscious 'wishes' but to be the true person you need to be they are important to be a consciously a part of your waking life.

Jerry