I am massively happy, almost never get the blues, and when I do it is very temporary.
I work as a physio for a charity. I love it and it is an integral part of my life. For a long time there was no real division between my home and work life, but I am more boundaried now.
I divorced 18 years ago and have been single since 2012. Have a son who is at university.
Financially manage. Can pay small mortgage and bills, run small car, eat, support 3 cats, and go out about once a month. Can't afford holidays, but live in a holiday area anyway. I could earn more by working longer paid hours, but I choose my hobbies instead.
Very healthy. Eat healthy, exercise hard, am through menopause, walk long distances for fun etc.
I'm like NotYourHun above - I have a simple but busy life, and I appreciate every second of it.