The cross is very spiritual symbol which shows your views towards the life. Perhaps you are trying to find the connection with the world that you are in. If you are very religious person, pray a lot, go to church often, it is very normal to dream about the cross. The cross is also a symbol of the end of something. In many cultures the cross is not only religious symbol, it also indicates the fact that something has come to an end.
Read more about dreaming of Cross in other dream meanings interpretations.