If doing anything no matter what with bad mood and low dopamine levels in your brain it ain't going to be successful.
That's why even the rich people need to boost their dopamine levels with good activities travel good food nice cars nice people around them.

If you are poor start working with your dopamine and good mood levels first and wealth will follow itself with anything you do.- when someone is happy about his business and going to clients and the clients see the happinness and passion then they want to buy your service or product.
Also when your dopamine levels are high you have emotions wich reflects your energy and vibe whatever you do when your dopamine level is most high it will have very high level of success.- that's why in poor areas people tend to stay poor and low self esteem no hope no happinness because there is nothing what gives them drive and motivation so they need dopamine that's why untfortunately the poor areas are first drugs consumers because humans need dopamine it's a Scientific fact that our body and health needs dopamine aswell without enough of this we start having the health issues off deadly bad drugs not the right way to do it but we must know that main thing is the dopamine in everything what we do.