So these two things motivate action:
discontent (physical pain or mental discontent/subtle fear)
curiousity (wanting to try out a physical sensation or learn something)Any others?
Kalosyni , thanks for an interesting question!
Another source to motivate action is our perceived need to react to something received by our senses (e.g. sudden flash, loud noise, unpleasant odor, request from a friend, etc.).