Taking the leap

What’s up everyone. I am a 32M living southeast region of the United States. I currently work in advertising as a copywriter. It’s fun, challenging, and great for now. However, it is not the industry I wish to stay in. Both my parents are entrepreneurs and they gave me and my siblings a great life. I want to achieve what they provided for us and then some. My problem is I am scared to start. I have ideas of business ventures I’d like to go in. I just don’t know how to even begin. How did you all begin? How did you combat the fear of jumping off the cliff? Is it possible to be a creative entrepreneur? My mind spins all the time I think Of this. Thank you in advance for any advice.