Is it a love of what you do? Is it fear? Or anger? Does your jealousy and desire to be better than someone else energise you?
Is it a sense of duty? Of moral obligation to a person, organisation or cause? Perhaps it’s an irrational obsession? Something you feel but can’t explain.
Is it the thought of what everyone will say if you quit or fail? Is it ambition, a lust for fame and wealth and status?
Only by understanding yourself, by comprehending the force that propels you, can you move past what is holding you back. Only through the search for inner-standing can you make progress that manifests itself in the world around you.