Can Fearlessness be Detrimental?

As most of my posts go, I state an example from my own life and then proceed with the question that comes out of it.

Example:
A friend, who I was having a conversation with, pointed out to me that I "procrastinated" as much as I did because I have no fear of deadlines. I pondered over the thought and realized that friend was not lying. He knew what he was talking about. I absolutely am not afraid of anything. If I have something due at 2 PM, I have enough confidence in myself to start working on it at 1 PM. Sometimes though, the quality of my work suffers because of that. I could have done so much better if I had started on time and finished it on time like normal people. To that, my friend made another insightful statement, "You like to create crisis for yourself just so that you can get a kick out of dealing with it. Try living like us normal mere mortals who do our daily chores 'normally'. Life is NOT meant to be a series of crisis-control-situations." That sent me on a thinking spree again. That's exactly what I do. I put things off cuz I do get a kick out of pushing things to the last minute and finishing 'em off with a "bang". It makes me feel good about myself. It infuses life into my otherwise mundane existence around deadlines. Being as dimwitted as I am, I asked my friend, "So why do you think I do that?" .... His answer still is resonating with me. I am not able to grasp on to the truth of it. He said, "It's because you know you are smart. You know you can handle any kind of pressure that is put on you and you enjoy pushing your limits just to see your intelligence being put to work. It would be a lot better if you used the same intelligence for something else that is productive." Hmmm, sure got me thinking again. I said, "hmmm" and he had an apt answer for my 'hmmm' as well .. hehe ... he goes, "yeah, you'll listen to my fundas and absorb them too but nothing will come out of it. you're like a universal sink (thermo dynamics) that absorbs everything BUT without any change in its output. " lol and we left our conversation at that.

the questions that come out of that conversation are ...

does "overconfidence" (as in my case apparently) / confidence in our own intelligence inhibit our growth? does it create a certain fearlessness towards authority? do we tend not to bother with controls put on us? and in turn, waste away our lives .. cuz societies operate under control .. and individuals who respect that control are the ones who succeed in the truest "materialistic" sense.