The process of meditation allows us to quieten our minds & allows us to gain access to the inner source of strength that can provide us with wisdom & guidance. It also teaches us to control rather than be controlled by our thoughts & emotions. Some people focus on an object, perhaps a candle, a sound, or your breath. This allows your mental activity to settle down & results in you becoming more peaceful, calm, & focused.
When you first start meditating you will probably find that your mind jumps all over the place, from one topic to another, & you may find it difficult to find the silence between your thoughts. This is normal.