I have struggled with the question, since up until then I had never thought about it. I only know that money is not what motivates me.
Maybe being able to contribute motivates me. To be someone who can add value, get results, and be effective in what I do.
Maybe success is what motivates me.
Finally I have decided that what I want to be able to say is "God's love is what motivates me." God's love is unchanging. It could be good times, it could be bad times, whether I am successful or unsuccessful, God's love is there. To be able to move forward, to put forth my best effort, to remain positive no matter what the circumstances ... because I know that God's love is there.