Yes! Gambling loses ang win. Theres ups and down too. I always win than lose. I experience that knowledge is more powerful than experience. The more you wise you are the more money you have.
Even with Knowledge and Experience, there is another factor which may completely make you lose or win and that is Fate or Luck. I have won some pretty good amount in the past but always felt the luck to be with me. Of course I have played with tactics and strategy. May be its different to every person. 
and if you are really into gambling you have to face it,it is part and parcel of life,you will win some you will loose some,you have to take that and get over it and try it another day,strategy do work sometimes and every person has their own winnings theories and with time you will understand how to cope up with those things.