Juggling (tennis) balls

I'm watching the Wimbledon tournament for the first time in years.

I already knew that I haven't had much of a life since Jan 2007 but I'm not sure what's to blame. I know the reason - my dwindling energy levels so I don't do as much as I used to - but I'm not exactly sure what's behind it. The job? Ageing? Both? Either way, I don't like it. I don't like feeling tired all the time. It's time I did something about it.