Sneaking
To dream of trying to sneak into a building or sneak past someone may reflect an awareness of yourself trying to bypass someone else's concerns. Doing something behind someone's back without them knowing about it. Bypassing something to secure an opportunity. Avoidance.
Alternatively, sneaking in a dream may reflect feelings about yourself or other people being up to no good. Concealing true feelings.
Negatively, sneaking may reflect feelings of taking a risk when you know you should be more passive. Risking cheating yourself. Feeling that you have something to hide. Taking risks to avoiding losing an opportunity.
Example: A young man dreamed of trying to sneak into an airport. In waking life he had a fever and was risking making it worse trying to do his homework.
Example 2: A man dreamed of trying to sneak past someone. In waking life he was trying to avoid a woman he had sexual relations with.
Example 3: A young man dreamed of having to sneak off to hide his bowel problems from friends. In waking life he was actually having bowel problems and was trying to casually hide this problem with new friends he met.