If you haven't made many mistakes in your life, you haven't taken enough risks. And if you haven't risked much, you aren't reaching your creative potential. The problem could be a fear of failure, because in our minds mistakes = failure, and all that comes with it.
A few years ago, I started thinking that I wanted to add another dimension to my practice. I thought through a number of ideas, read various articles and books, talked to colleagues, procrastinated, stalled out, felt confused, etc. My goals at the time were vague. I wanted to do more, take the work to another level, have a new creative challenge. But what? It was a time of false starts, dead ends, and disappointments. The process, though incredibly frustrating, has taught me a lot about how to learn from mistakes.
One of these mistakes was choosing to go on a local news show once/month to briefly talk about a psychological concept. I feel embarrassed just writing about it. I tried to keep it light (it was weekend morning news after all), but I was anxious, and I never got to communicate what I really wanted to, and it was very early in the morning, and it was awful. But...what I realized through that experience was that I really do want to bring psychology to people where they live and work, not just wait for them to come to my office. A big, uncomfortable step.
Fortunately, I have my share of these type of experiences that when sorted through make adding business consulting to my portfolio an obvious and exciting choice. So join me in taking a risk.