Resistance to change is natural.
We all do it, often in ways we are not conscious of. This resistance to change can take many forms including addictions, physical illness, accelerating activity, lethargy and depression. (For a wonderful brief read on how insidious resistance is, read The War of Art: Break Through the Blocks and Win Your Inner Creative Battles. It applies to all of life, not just creative endeavors! It should be required reading for anyone on the path of transformation.)