[kamaal]

>>mainly because his life is insane

Most kids are insane. Such insanity comes because they don't think before they act, they don't worry about risks and so creativity flows instantaneously. I know this as I was insane as a kid. I used to sing at every opportunity and occasion. I won awards at numerous occasions singing devotional songs in Indian classical music genre. I have sung in front of large audiences, in stadiums, before sporting events, tough competitions etc. In fact the only thing I enjoyed totally in school was singing and science exhibitions.

The only issue was 'video camera' was not affordable and accessible at that time. There was no Youtube and my parents thought singing and music won't help me make a living. I begged them to let me learn how to play an instrument. But they didn't let me go close to it.

You will be shocked how many kids are talented but never receive the appreciation and much needed direction they need in the early part of the their lives. A lot of talent goes wasted this way.

If Justin Bieber is what he is today, he is a insane kid who works very hard and enjoys what he does. But he has also had the advantage of getting the right direction and appreciation from people around him.

[corin_]

"His life in insane" is not the same as "he is insane".

[PakG1]

If you define "insane" in the colloquial sense of "unbelievable" or "amazing" or "astounding", then the word works for both sentences. If you define it as "clinically crazy" or "no grip on reality", then it doesn't work for both sentences. I think the gp is clearly going for the prior, not the latter.

[corin_]

Yes the word would work in both, but saying someone has an amazing live still isn't the same as saying that somebody is amazing.

GP was talking about the life he has, not the talent he has, so the "insanity" isn't comparable between his life and that of a child who is talented but has a normal life.