Koba, we're sprites. We're made a certain way, and there are certain things we can't change. Your personal gravity, inertia and other physics are an integral part of you.
But while variables like those are set in stone, your personal behavior is a different matter. You don't have to follow the same routines you did back in your game. You're free now.
"I'm willing to bet that your inability to attack is only a mental block - just you acting out the character your programmer made you to be. If you're willing to change, I bet you can overcome those habits."