Many irrational beliefs can be summoned to support continued gambling.  A common myth is the gambler's misunderstanding of randomness.  The gambler tries to make sense of a series of losses or attempts to see a pattern in the results of his/her wagers.  Some other common myths are:

Ability to Influence the Outcome:
Gamblers begin to believe that wins were produced solely by their own efforts, rather than by the random operation of a gambling device or cards.

Magical Thinking:
The gambler comes to believe that wins have been produced by thinking a certain way or even hoping or wishing for a win.

Superstitions and Rituals:
Gamblers begin to believe that certain objects, ways of sitting or even articles of clothing may be helping or hindering their gambling wins.

Systems:
Gamblers believe that by learning a certain system of betting they can overcome the house advantage.  This results in inevitable failure.

Personification of the Gambling Device:
The belief that a slot machine or VLT is deliberately punishing, rewarding, taunting or trying to make a player angry.

Near Miss Belief:
That belief that by "almost" winning the gambler was on to something of significance, justifying further tries.

Cold or Hot Machines:
The belief that if a VLT hasn't paid out for a while it wall pay out soon, or that if it has paid out recently, it is not due to pay out in the near future.

"Chasing" Beliefs:
The belief that money lost by gambling hasn't really been lost but can be recovered through further gambling.