What wise words! I think money can buy happiness because as you said, when you don't have it, that's stressful and when I'm stressed, I'm not happy! I love having savings and being prepared for the future. I also love the idea of writing for money. Not every one can write well, and I feel using our strengths to our advantage is a great way to go!
I remember once thinking that I would stop writing and do something else instead. That lasted 2 days. I am blessed that I can sit here in my jammies and make enough money to have fun. Otherwise: