In life, point of view can change everything. It's the same way for books. The point of view you choose for your story will pretty much determine everything about how that story is told. That's pretty serious stuff. So before you commit to a POV, explore all your options with this vintage Writing 101 post that lays it all out pretty clearly.
When you're done with this post about POV, feel free to read it from the bottom up. After all, changing your point of view can make all the difference.