I've played with no limits and found myself sitting for 5 days straight
If you mean you lost everything in the first two days, and then sit around for 5 days until you can make another deposit, Then you have no bankroll strategy. Believe me when I say it's the most important thing in Poker! I have had days where I couldn't make the money bubble in any game I played, but I always have enough in my Account to try again the next day.
A solid Bankroll Strategy works, in my opinion, and I am in profit because I follow strict guidelines, I never pay more than 1% of my Bankroll to enter a game, never play on the Cash tables, and the only big Tournaments I play in are Freerolls. Tournaments are fun, But there is no Fun when you are losing money and going bust in just two days.
I usually try playing up to 10 Sit and Goes every day, They are my bread and butter, Those games are where I am constantly improving, and usually make the money in most, Sure the Prize money is small but you won't make a million Dollars if you are constantly dropping pennies on the street and just leave them there. "Look after the Pennies and the Pounds will look after themselves".
With a Solid strategy I can lose every game I play and still Play for up to another 9 days without it busting me out, and if I found myself in a situation like that I would adjust my buy-in Stake, to take into account that I am on Tilt, and also adjust my game play.
Bankroll Management Works and most players, like myself who have never made a deposit, never gone entirely Broke, and still are able to buy-in to
real money games because they are patiently waiting to make enough money from Freerolls, then start using that money to play buy-in games. I have done it several times on different sites and so have others,
It's not Rocket Science, and there is no secret about it. It's just having the patience to play within your own limits and sticking at it.