We all have fears. For some of us it's an unpleasant emotion that sticks to our brain since childhood, like flying or even the dark. We feel threatened by that emotion. However, sometimes we do get that feeling as if we're on top of the world. Just like Superman himself; although, even he is afraid of kryptonite. It's all about that moment in life that you have to come face to face with your fears and challenge yourself.
Being content is easy because it's a peaceful happiness. The more you feel content, the less you fight your fears and challenge yourself. With progressing you sometimes need to take that leap of faith to move forward, sure we're all afraid of this. It's easy to be content, at the end of the day we all just want to be at peace with ourselves and at peace where we're at in life. Just know, after we challenge ourselves we'll be back on the same path. Still striving forward looking for a new fear to conquer.