Graeme Obree was a world champion cyclist in the 1990s, famous for his self-built bikes and unique racing style.
But while making his name on the track he was battling severe depression, which led to suicide bids and family break up.
Graeme Obree tells Stephen Sackur that despite all the pain he still loves cycling, a sport which probably saved his life.
Watch the full interview on BBC World News on Tuesday 10 January at 04:30, 09:30, 15:30 and 21:30 GMT and on the BBC News Channel at 04:30 on Tuesday 10 January and 00:30 on Wednesday 11th January.
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