BBC World Service's The World Today programme is asking migrants who have been successful in their adopted countries how they got to the top of their field.
Strive Masiyiwa is publisher of Zimbabwe's Daily News, a paper critical of President Robert Mugabe, and the CEO of telecommunications group Econet Wireless International. He is a Zimbabwean national who lives in South Africa.
I trained in the United Kingdom - I obtained a degree there in electronics and power engineering.
So when I left university I went into telecommunications. I worked briefly in the United Kingdom and then moved back to Zimbabwe, because it was a newly-independent country, and it was my home.
I personally did not have a happy relationship with the government - I decided that I was better off relocating and working from South Africa
But I left almost four years ago.
I am also the publisher of the Daily News, Zimbabwe's only independent newspaper.
The government recently shut down the paper.
So that might give you an idea of the nature of our relationship with the government in Zimbabwe. They don't appreciate that you don't shoot the messenger.
We reflect what is happening in society. To shut down the newspaper does not take away the problems which we've been reflecting.
We're constantly having running battles with the government. I decided that I was better off moving to South Africa.
I also felt that if I was there, it would be easier for me to develop the vision that I had for providing telecommunications in Africa.
I still have hope for Zimbabwe, although I still cannot go back, which
leaves me with a deep sense of sadness.
It's an increasingly sad situation, and my prayer is that sooner rather than later we will begin to see some changes which will improve the lives of the people.
I keep a very close tab on what's going on in Zimbabwe. Some of my closest family and friends are there.
I'm sure anyone in my position would rather have achieved what they've achieved at home.
But in the era that I was born and raised, that was not possible.
So I just have to accept that reality, that my circumstances as an individual would probably not be quite what they are if I had stayed in Zimbabwe.
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