The wallet in a dream can have several meanings depending on the situation in your waking life. Usually the wallet indicates the financial aspects of the dreamer. If the wallet has been stolen in a dream, then it means that you should be aware of other people, as they might use you. If your wallet has been lost, then the dream offers you to be more careful with your money and how you are spending it. The dream could also indicate the loss of your own personality. Perhaps you do not feel yourself.
Dream dictionary: when i see an imbecile in my dream dream meanings dream meanings
When you see yourself walking on some stairs, then it can have different meanings depending on where you going. If you are going down the stairs, you will have minor frustrations, but if you are going up, you will reach your tasks. If you fall down the stairs, then such dream indicates the necessity to be more careful and do not take any risks.