File Cabinet 
To dream about a file cabinet indicates that you should keep your reality and details correct. The file cabinet could indicate the thoughts or extraneous details that you require occasional access to.
To dream that the drawers of the file cabinet are open wide suggests your willingness to accept other thoughts, concerns, ideas, and concerns.
To dream that the file cabinet is locked indicates that you would like to keep something hidden from others. This dream could also suggest that you are being stubborn.
Hang Gliding
To dream of hang gliding indicates personal liberty and courage. Dreaming of hang gliding symbolizes belief in one's destiny. On the other hand, to dream that you crash a hang glider means a loss of faith and failure to commit.
Obstacle Course
To dream of an obstacle course may signify that the path you have chosen is not the best one for you. At the very least, you may be making things harder for yourself than is necessary.
To dream of an obstacle course is a gentle reminder to practice acceptance, as resistance can be pointless and painful.