You shouldn’t look at this superficially; it holds a deep meaning in the sense that it’s not just about physical balance but a deeper meaning. When you take skateboarding lessons, you will be taught not to lean too much on every side whether forward, backwards or to the sides. This means that you are taught to stay exactly on the middle of the skateboard so that you don’t fall. Balance basically in skateboarding means you staying up on your feet without leaning too much on every side and not falling. This balance also applies to life in general not just on the skate board, don’t lean forward too much which is basically you living in the future or in the past when you lean backward too much.