There's a lot of reasons I had to move on. Family's definitely a big part of it. And the longevity of my career - I played for 15 years, and I was just tired of the whole international scene. It's quite busy. Very stressful.
I can't keep playing 10-11 months a year and keep being sharp after 15 years of international cricket.
You live for those pressure moments. Through an international career, you have ups and downs, but you always feel you are going to be tested in moments like that. It has taken me years to feel comfortable and to feel like I have good composure in those situations.
From a personal standpoint, my ability to play all around the wicket is more mindset than anything else.
As a captain, I can't make the same mistake twice. As a player, you can get away with that, but if the captain does that, then it affects the whole team.
My mindset in all three formats, in any situation, is exactly the same. I just want to get myself in, get myself a nice foundation to hopefully attack and dominate the bowlers.
I truly believe that players who tell you they don't feel the pressure of international cricket, of being away from home for months at a time, are lying to everyone and themselves.
If you pick up that information, the first metre or two, the ball coming out of the hand, you can analyse what's coming.
It's tough at slip. The ball doesn't come to you very often. So from that perspective, I enjoy keeping more - you're in the game the whole time.
It's never been about my own runs. If I can score as many as possible to get us into a position to win, then I'll be a very happy man.
Playing at the highest level alongside your friends, scoring runs for your country are things that I look back and go, 'Ah, I miss that a little bit,' but there's a lot I don't miss. I don't miss 90 per cent of it.
I know Test cricket is more about endurance. T20 is more about innovating, creating, and the energy at the wicket.
It's not really part of the game to say, 'Oh, it's a batter's game; it's a batter's game' - I don't know why it goes on. It's a beautiful game that's greatly competitive between bat and ball.
You represent your country - that's the biggest honour ever. I had the privilege of doing that for more than 14 years.
In all kinds of sports, you have to get the confidence going within before you can start proving people wrong or right.
It's important to make sure your players have the mindset that playing international cricket is still the ultimate form of cricket.
If you don't learn, especially if you are not playing well, then you are not going to move forward as a team.
It's a huge honour to play my 100th Test, and I never in my life thought I'll be in this kind of position.
I'll do whatever it takes for us to win games of cricket. If I have to sledge, I'll get involved like that. I'll try and intimidate a player if I have to.
I'm not a nice guy on the field, and I've never really respected a guy who's been a 'nice guy' on the field. I want opposition to be hard, to play to win the game for their team.
For my part, I am not a great believer in bad luck on the cricket field, in business - in fact, in any walk of life.
An IPL match may be decided when the ball passes inches beyond the grasp of a fielder on the boundary or when a direct hit catches a batsman inches short of the crease.
Even the thunderous master-blasters, like Andre Russell and MS Dhoni, men who now make scoring more than 20 runs per over look simple, often thrive on the right side of an incredibly slender gap between six and out. They are not more lucky than anyone else. They are more brilliant.
No matter how hot the fire burns, a Protea always survivesCollection: Fire