I've been stuck in my studio apartment for the last week with an MCL injury, but it hasn't been all that bad. I'm working, watching movies, following basketball, and keeping in touch with friends--all over the internet.
Increases in happiness might not be through rising incomes but rather more time to do what we want. Beyond a moderate income in the US what percent of income is spent on status. If status competitions could focus on things that created happiness such as giving money to schools, throwing fun parties, and telling funny stories, then less resources would be spent on fast cars and extra bedrooms.
I haven't had to visit a doctor because self diagnosis and prognosis was available online. New crutches were delivered for under $24.
Happiness and income are becoming less tied to one another, because with the internet the world is your oyster. And if you want to make more money, learn a skill you can sell over the internet. My girlfriend makes $150 or so a week editing photos part time.
Freedom to be where one wants and do want they want is the next low hanging fruit.