Dreams

Is it truly possible that we dream of what we want our reality to become?  Of course, it's plausible, as I often dream about what's on my mind at a specific time.  But what about when you know you haven't been thinking about something - even purposely not - and it continually persists to bombard your dreams?  I feel like my subconscious mind is being violated by this desire that I don't necessarily feel aware of when I navigate the idea during the daytime.  Then again, I've never been one to have a good connection with my feelings.  I don't like it - it throws off my entire morning when I wake to reality.  I want it to stop.