I'm looking for a word which describes "constant desire to achieve more, to gain something, doesn't matter what".
It can't be tied to one goal, like ambition or aspiration. It can be adjective.
"I can't rest, my ' ' is driving me forward" OR "I can't rest, I am too ' ' for that"
EDIT: Okay, I'll try to explain better. Let's say I have 2 choices to make: to eat a salad, OR to eat a chocolate bar. To earn some money OR to watch NETFLIX. So, I choose healthy food and I choose money. I always choose what I think is the best option which leads to maximum gain (subjectively speaking). And I want maximum gain, always. How is that "wanting" called ? Words "ambitiousness" or "driven" don't exactly fit