Our brain is like a big computer inside our head, and just like a computer, it has different parts that help it work properly. One of these parts is called the "subconscious mind."
Think of your subconscious mind like a secret library in your brain. This library is full of books, but the books are not like the ones you read at school. These books are filled with all the things you have learned and experienced in your life.
Let's say you are learning how to ride a bike. When you first start, your conscious mind, which is the part you use to focus on things, is in control. You have to concentrate on balancing and pedaling. But after a while, your subconscious mind starts to take over. It remembers all the things you've learned about how to ride a bike and processes the information automatically. Soon, riding a bike becomes easy and you don't have to think about it too much.
Your subconscious mind is always working, even when you are asleep. It remembers your dreams and can even help you solve problems. Sometimes, things in your subconscious mind can affect your behavior without you even realizing it. For example, if you are afraid of spiders, you might avoid going near them even if you don't consciously think about it.
So, your subconscious mind is like a secret library in your brain where all your memories and experiences are stored. It helps you do things automatically and can affect your behavior without you knowing it.