We acclimate ourselves to many different things, however, not just changes in altitude. When we change jobs, for example, it takes several weeks before we become comfortable in our new working situation. During this acclimating time we are figuring out new job responsibilities, trying to meet co-workers, and may be adjusting to new hours. A friend of mine once told me that you should always allow two weeks of adjustment period when you are going through transitions. She advised me not to make important decisions during that time because I had not yet acclimated myself to the new situation.