It's been a good start to the Australian Open for me - I've beaten two big guys in Alexander Zverev and Sam Groth and I think I've played well. I've dropped my serve only once in two rounds and I actually haven't served that well, so that's positive. I think it shows an improvement in my second serve, which is good, but I still think I can play better.
Today I face a completely different test, though. I'm playing Joao Sousa from Portugal, just as I did in third round here last year. He's a good athlete. And he wins, he knows how to win matches. He understands the game well and he gets the most out of his game. 
I know it will be a tough match and hopefully I can get through and if I do it will be a good match to get into a rhythm. I'll play a lot of long rallies, I'll hit a lot of balls. I'll hit way more balls than I did against Sam, so if I can win that one, I think that can help me for the rest of the tournament.
Winning the Davis Cup at the end of last year was an unbelievable experience, especially winning it with my brother, Jamie, beside me in the team. Now, at the start of this year, I have so much to look forward to in the next few weeks. Next month, my wife, Kim, is due to have our first child - and in between, I have the Open to play.
When Novak Djokovic won the Davis Cup for Serbia in 2010, it set him off on one of the best seasons of his career and he started by winning here.
Obviously it would be great if that could happen to me, but everyone is different. I think winning the Davis Cup is obviously huge but a lot of players have won the Davis Cup and become fathers and it hasn't meant that they've gone on to have the best years in their career ever. I think winning helps and gives you confidence and belief and everything, but I think the quality of the player is what's most relevant.
Psychologically, winning major competitions can help you as well - and I'm sure winning the Davis Cup helped Novak and helped most players that have won it. Whether I'll go on to have the best year of my career I have no idea, but I'm going to try to. I'll just have to see what happens.
Being here this year is obviously a bit different. This is the first slam I've played since the French Open in 2010 that Kim hasn't been with me and because it's so near to the baby coming, I've got different priorities while I'm here.
When I'm on the court, I don't think about the baby - obviously, I'm focused on the match - but then when I'm away from the court, that's pretty much all I'm thinking about. It's something exciting to look forward to, but it's just the timing of this event's made it a little bit more stressful.
At least when I'm sleeping, I'm not worrying about it! We are 11 hours ahead of UK time here so the time difference can be tricky for keeping in touch. When I wake up, I have a couple of messages from Kim saying she's fine and then, in our morning here, she's going to sleep back home. So I speak to her in the evenings after my matches or practice - it's working out OK; it's just not the easiest place to communicate from but we've done all right so far.
That said, I do jump every time I get a phone call just in case it is news about the baby. The other morning, I had ordered room service and I got a phone call to my room that woke me up. I completely panicked. I answered and it was only the people delivering my breakfast saying: "We're just at your door with the room service." I just didn't hear them knocking because I was sound asleep. But that certainly woke me up!
Being on my own is also a new experience. It's not that I'm lonely or anything; I have all of my team here so we are still doing the same sort of things, it's just in the evenings and in the mornings I need to make sure I'm a little bit more organised than usual. I have to make sure that I've got the alarm set, that I've ordered my food properly, that I've got all my stuff ready for the next day and that sort of thing.
But, so far, I think I've been doing fine on my own. The news from home is all good and everything is calm and I can just concentrate on my matches. Let's just hope it stays that way.