The easy answer to the question in the headline will be: "Choose to do it, stop wishing; choose to live out your passion; make that jump from the old life into the new; all it takes is a slap with the tail". But many of us have realised that it is not always that easy to create our wishes and desires here on planet Earth.
First I must consciousnessly realize that there is something in my present life that I want to change.
Second I must figure out what I want to replace it with. If I remove something without replacing it with something else, then I have a hole that could be filled with something I unconsciousnessly creates or attracts.
Step three is to find the courage to actually make the jump. The jump itself is not the hardest part, but to let go of the well known and therefore safe no matter how it looks, can be quite a challenge.
Even when I have chosen the new things I want to have in my life, the adjustments to the outer world may make it seem different than what I would expect. This means that I must get use to live with a certain amount of uncertainty of what I create in my life. This uncertainty can vanish if you know that all is well, that your essence is safe and that you never are alone.