When you go up the elevator in your dream or vision, it tells you that you are reaching a higher level of consciousness in your life, you have grown inwardly and are rising above yourself. Another explanation is that you experience new opportunities and possibilities or perhaps prestige or wealth.
Yet another explanation is that you experience imbalance between your masculine and feminine energy or in your work, at home, in relationships and feelings, you have to learn to ground and find the balance. An alternative explanation is that you feel a little higher than you really are or that you consider yourself above other people.
As you go down the elevator it tells you about the longing for the past, the unresolved obstacles, problems, fears, anger, pain and sorrow need to be resolved and explored before you can move on in life.
The up and down motion of the elevator tells you the ups and downs of life that are needed to grow in a process or in life itself. An alternative explanation is that bad luck is going to overtake you; it discourages you from doing things.
An elevator going from left to right in your dream or vision tells you that you are going in a different direction in your life, you have made a choice or you are going to make a choice that will make you leave your current life path. This can be both positive and negative.