In order for you to truly understand just how powerful your subconscios mind is you must first understand and accept that there is no such thing as coincidence. Nothing happens by chance. That means that nothing is predetermined or meant to be.
Your subconscious mind creates everything in your life based on the messages and info you sent to it. You are constantly sending messages and information to your subconscious mind and over half of those messages are useless or work against you. Then you wonder why things never get better no matter how hard you try.
Your messages to your subconscious mind are your thoughts, beliefs and actions. So if you constantly worry about not having enough money -- you'll never have enough money. It's that simple. If you don't think you're capable of accomplishing your goals-- you'll never accomplish any of them. If you don't think there are enough opportunities for you-- you'll never find the right opportunity. If you think your overweight-- you'll always be overweight. Why? Because your subconscious mind is always you send it- and if that info is negative then you will only have a negative reality.
Understand that your subconscious mind does not have a moral clause. It does not say that the message you are sending is good for you so let's create that. It does not say that the message you are sending is bad for you so let's not do that. It does not distinguish between what is good for you and what is bad for you. It will only go out and create your reality based on the message you send.
Now, its important to understand that your messages to your subconscious mind are not just your thoughts! Everything you do, say and believe is picked up by your subconscious mind. So just because you start thinking you can-- that doesn't mean that things will change overnight. In order to get your subconscious mind to create the things you want, then yo need to create a new way of living. And the first thing you have to do is get your mind working for you.