The key is to say 'no' to the fear and unsupportive beliefs when they come up. So it goes with all the other beliefs that have been handed down to us. The world is round, man can go to the moon, and you can accomplish anything that you desire. If you believe that life is hard, the Universe lovingly agrees with you. Choose your beliefs and your thoughts so they support the life you want to create.
Magic does happen.
Don't let yourself be carried away by fears and beliefs of lack and unworthiness, or whatever is the particular track you have chosen. Decide to flow instead on a river of faith. Trust in yourself and in a benevolent Universe. Live life with joy and start believing that, yes, you can have all that you desire. The only condition or prerequisite is that you believe that your dream is possible right here and right now.