There must always be a balance between fear and greed in betting, because those are the major problem in any betting, while greed makes you selfish, so you want to take all the money in the market, fear deprive you  of games you would have won.

Fear is also a major part of failure in betting, as some will want to leave the market I.E not betting on sure games they have seen, maybe because they are afraid the market will take the money they have gotten.  But, in all know when to bet and when to not bet. Get a strategy for your gambling.