Making a big life change is pretty scary. But, know what's even scarier? Regret

If you could do anything in the next 6 months to change your life what would it be? What would be a Dreamline so far out of your comfort zone that it would scare you half to death if you actually did it? A Dreamline so big that your life would change one way or another? 
I have been thinking about this today. My life, actually our life, is at a crossroads. 
For me, if I spent six months working solidly on my digital scrapbooking business and other income producing ideas, I would know if there was a chance that my businesses would succeed or not. Even scarier is, what if I wasn’t successful? My whole direction in life would have to change. I do want to be my own boss and create my own income. I know in my heart that online business is the way for me – I am not interested in a bricks and mortar business. So for me, six months of solid uninterrupted work would be the make or break dreamline. I would know if I had a chance at this game. What if my Dreamline Diary website took off and I could help people like you move closer to your dreams? What if I was truly helping you change your life? What if my digital scrapbooking store made me an income that I could live off? 
For my husband, he has had such huge changes in his life with his injury and he hasn’t worked for the past six months. The concept of doing something way out of his comfort zone to make an income would be a massive change. He too would like to be in control of his own future income, but he has no idea of where and how to start. 
For us, the answer is to fear set. Write down the worst and best possible outcomes of our situation, and if the chance of a positive outcome outweighs the chance of a negative outcome (and we can continue to survive and pay bills) then we owe it to ourselves to do it. Take the challenge and have a decent crack at it. 
So tell me, have you ever made a massive life changing decision? Created a goal or dreamline that was so far removed from your previous ideas in life that your world wasn’t the same after your success? Share your story in the comments below – tell us how you have taken charge of your life.