How does motivation work in the brain?

How does it work that one person when faced with some issue is super motivated to solve it while another is completely passive and does nothing?

Your question is far too broad and suggests far too little foundational understanding to offer a helpful response. 

Note: This feedback applies to many threads you open with questions this way. It reads like, “how does air work?”  and leads folks like me to think, “geesh, where do I even start?”

Edited April 22, 20214 yr by iNow

That's just the way the cookie crumbles!