LOL. Maybe you don't have enough trading skills and experience that is the reason why you lost 7 BTC in trading 
. As I can see there are a lot of traders still earn a lot of money cause they have what you don't
You can't see anything other than unverifiable posts.. As I can see there are a lot of traders still earn a lot of money cause they have what you don't I can pretty much blindly guarantee you that most of the big mouths on this forum are losing money in the long run and only mention the few times where they got lucky.