For developers, a commit usually means a git commit.
In extreme sports like parkour and climbing, commit means something a little different. Before attempting something dangerous, you steel your mind and make up your mind to go through with it. That is called committing. Here, the weight of a commit is enormous, because there is no soft reset that takes you back to the moment before you committed.
If I have decided to do something (if I have committed), I have to see it through without a shred of doubt. Even a moment's hesitation leads straight to failure.
In truth, the major decisions in life are all like the commit in an extreme sport. Once you have decided, you can't entertain doubt. The moment doubt creeps in, even what would have worked won't. I think a little narcissism can even help here.
Whether you can commit on your own initiative or not is what separates prey from predator in life. Predators commit by their own choice, and prey get committed by force. A life without commitment doesn't exist. Risk is not something that goes away just because you avoid it.