hmmmm...I've been wanting to start my own "business" for a few years......and this is more of a self-employment than a business..but I guess it can be counted as one.
And the biggest reason goes between too busy and too unmotivated. I need a real deadline and outside factors that will affect me to force me to do something....or else I procrastinate...it's just how I am...and yes it annoys me.
I've learned to make my friends make bets with me with deadlines to force me to do things. LOL. It seems to be the most effective method so far. I slack off less.
This is my experience, everyone elses can be different.