Being content is fine if it makes you happy, but in my case -- in my story -- I had reached a point where I had no choice but to do something completely radical to change my life and take back control of it. If I had stayed with what made me feel comfortable, I never would've been happy. I would've been miserable, continually, until I felt like I had nothing else let to be live for.
There will be moments that you encounter throughout life when you become nervous, anxious, scared, fearful of what could happen -- but it is absolutely possible for you to harness those feelings, and look at them as signs of what to do moving forward -- instead of moving away from them.
So if the idea of doing something scares you, maybe you should actually do it.