Do you know that our thoughts are materialistic? That what we think and imagine will happen with us sooner or later. Our thought process is more tightly connected with physical world that many think. So, how unreal it might seem, but if you change you way of thinking, eridicate all negative thoughts, your life will get another shape.
Of course, it's not so easy to at once create necessary thought process, but if you have true desire you will have success! You should remember that your brain is your "garden", which can be both watched after and neglected. You are the "gardener" and can both grow your "garden" thick and leave it wasted. Thus, in future you will reap the fruits of either your labour or inactivity.
To make this my statement more clear, I would like to give you an example... Let's assume that you want to develop self-reliance. Using your thoughts and imagination, you should imagine yourself sussessful and self-congident person. In your mind you make courageous