Dreaming that the wall fell down means that you will have a lot of trouble in the next few days, but you will get through it safely.
The wall symbolizes something that prevents you from realizing your wishes. It is often planted on yourself.
It's a good dream to dream that you hit the wall.
Dreaming that the wall fell down means that there is no obstacle to doing anything.
Dreaming that a wall or fence is blocking the road means that your problem is about to be solved.