In his latest column for BBC Sport, Jamie Murray talks about narrowly missing out on another Australian Open final, the uncertainty of what happens next for tennis and using video technology to help make a "big change" to his game.
After losing in the Australian Open semi-finals on Friday, I flew back to London at the weekend and now I'm spending a couple of weeks at home with my wife.
You can't avoid a bit of jetlag and I was up early this morning as my body adjusts back to British time. I'm used to it now after years travelling the world on the tour and I just have to deal with it.