Being a successful slot machine player is impossible. Slot machines are made to give the house a long term edge which means that the house always comes out better if played long enough. The only real way to mitigate the advantage of the house on slot machine games is to play the game with a large jackpot. Place your bets at the maximum every time you play, and then hope that you win. Then when you do hit the big jackpot and you win, what do you do next? Stop playing that game.
Don't get me wrong. I'm not saying you shouldn't play slot machines. In fact, I believe slots, particularly the ones that are truly good can be a lot of entertainment. However, you must keep in your mind that mathematically, what you're doing by playing a game on a long term base is paying entertainment. You can determine how much you're paying for enjoyment by dividing the edge of your house by your average bet multiplied by your amount of spinning per hour.
If, for instance, you're playing a game of slot with a payout of 95%, then there is a house edge of five percent. (The casino keeps the 5% from every bet you place in the long run.) If your bet is $3, then you'll pay an average of 15 cents each time you spin the casino. (5% times $3.) Assuming you're making 500 spins per hour, the game will cost the player $75 per hour that may or may not be a fair price for enjoyment. That depends on your bankroll.
Something else to factor into the calculation is what the bonuses and perks you receive at the casinos are worth. If you're playing at an actual casino that is receiving free drinks as you play, then you can subtract the cost of these drinks from your hourly rate. (Or you can include the cost of those drinks to the value of the entertainment you're receiving--it's just a matter of perspective.) My suggestion is to drink premium liquor and premium beers to increase the value of entertainment you're receiving. For instance, a Heineken will cost you $4 for an ounce in a fine restaurant. You can drink two Heinekens in an hour, and you've just lowered what it costs you to play each hour between $75 and $68.
Slot clubs also refund some of your losses each hour, so make sure to join the casino's slot club and ALWAYS use your card to track your play. There's absolutely no reason senaste casinona not to join this. Casinos also reward their bigger slot players with incentives like show tickets, meals and rooms for free, all of which can lessen the amount you're spending each hour that you play on their machines.
How do you become a successful slot machine player? I'd summarize it by saying know how much it costs you to play every hour and every spin, take advantage of all the comps and the perks and try to win the biggest progressive jackpot.